Add type hints to plugin options where possible

This could help beginners to get autocompletion, catch mistakes earlier,
and allow them to skip the docs for simple configs.

This is not perfect because a lot of the plugins type all of their keys
as required, even though they have defaults, but this is good enough.

init.lua

@@ -273,13 +273,16 @@ require('lazy').setup({
   -- See `:help gitsigns` to understand what the configuration keys do
   { -- Adds git related signs to the gutter, as well as utilities for managing changes
     'lewis6991/gitsigns.nvim',
+    ---@module 'gitsigns'
+    ---@type Gitsigns.Config
+    ---@diagnostic disable-next-line: missing-fields
     opts = {
       signs = {
-        add = { text = '+' },
-        change = { text = '~' },
-        delete = { text = '_' },
-        topdelete = { text = '‾' },
-        changedelete = { text = '~' },
+        add = { text = '+' }, ---@diagnostic disable-line: missing-fields
+        change = { text = '~' }, ---@diagnostic disable-line: missing-fields
+        delete = { text = '_' }, ---@diagnostic disable-line: missing-fields
+        topdelete = { text = '‾' }, ---@diagnostic disable-line: missing-fields
+        changedelete = { text = '~' }, ---@diagnostic disable-line: missing-fields
       },
     },
   },
@@ -301,6 +304,9 @@ require('lazy').setup({
   { -- Useful plugin to show you pending keybinds.
     'folke/which-key.nvim',
     event = 'VimEnter', -- Sets the loading event to 'VimEnter'
+    ---@module 'which-key'
+    ---@type wk.Opts
+    ---@diagnostic disable-next-line: missing-fields
     opts = {
       -- delay between pressing a key and opening which-key (milliseconds)
       -- this setting is independent of vim.o.timeoutlen
@@ -468,6 +474,9 @@ require('lazy').setup({
     -- used for completion, annotations and signatures of Neovim apis
     'folke/lazydev.nvim',
     ft = 'lua',
+    ---@module 'lazydev'
+    ---@type lazydev.Config
+    ---@diagnostic disable-next-line: missing-fields
     opts = {
       library = {
         -- Load luvit types when the `vim.uv` word is found
@@ -482,7 +491,13 @@ require('lazy').setup({
       -- Automatically install LSPs and related tools to stdpath for Neovim
       -- Mason must be loaded before its dependents so we need to set it up here.
       -- NOTE: `opts = {}` is the same as calling `require('mason').setup({})`
-      { 'mason-org/mason.nvim', opts = {} },
+      {
+        'mason-org/mason.nvim',
+        ---@module 'mason.settings'
+        ---@type MasonSettings
+        ---@diagnostic disable-next-line: missing-fields
+        opts = {},
+      },
       'mason-org/mason-lspconfig.nvim',
       'WhoIsSethDaniel/mason-tool-installer.nvim',
 
@@ -750,6 +765,8 @@ require('lazy').setup({
         desc = '[F]ormat buffer',
       },
     },
+    ---@module 'conform'
+    ---@type conform.setupOpts
     opts = {
       notify_on_error = false,
       format_on_save = function(bufnr)
@@ -899,7 +916,15 @@ require('lazy').setup({
   },
 
   -- Highlight todo, notes, etc in comments
-  { 'folke/todo-comments.nvim', event = 'VimEnter', dependencies = { 'nvim-lua/plenary.nvim' }, opts = { signs = false } },
+  {
+    'folke/todo-comments.nvim',
+    event = 'VimEnter',
+    dependencies = { 'nvim-lua/plenary.nvim' },
+    ---@module 'todo-comments'
+    ---@type TodoOptions
+    ---@diagnostic disable-next-line: missing-fields
+    opts = { signs = false },
+  },
 
   { -- Collection of various small independent plugins/modules
     'echasnovski/mini.nvim',
@@ -943,6 +968,9 @@ require('lazy').setup({
     build = ':TSUpdate',
     main = 'nvim-treesitter.configs', -- Sets main module to use for opts
     -- [[ Configure Treesitter ]] See `:help nvim-treesitter`
+    ---@module 'nvim-treesitter.configs'
+    ---@type TSConfig
+    ---@diagnostic disable-next-line: missing-fields
     opts = {
       ensure_installed = { 'bash', 'c', 'diff', 'html', 'lua', 'luadoc', 'markdown', 'markdown_inline', 'query', 'vim', 'vimdoc' },
       -- Autoinstall languages that are not installed
@@ -990,7 +1018,7 @@ require('lazy').setup({
   -- Or use telescope!
   -- In normal mode type `<space>sh` then write `lazy.nvim-plugin`
   -- you can continue same window with `<space>sr` which resumes last telescope search
-}, {
+}, { ---@diagnostic disable-line: missing-fields
   ui = {
     -- If you are using a Nerd Font: set icons to an empty table which will use the
     -- default lazy.nvim defined Nerd Font icons, otherwise define a unicode icons table

lua/custom/plugins/init.lua

@@ -2,4 +2,7 @@
 --  I promise not to create any merge conflicts in this directory :)
 --
 -- See the kickstart.nvim README for more information
+
+---@module 'lazy'
+---@type LazySpec
 return {}

lua/kickstart/plugins/autopairs.lua

@@ -1,6 +1,8 @@
 -- autopairs
 -- https://github.com/windwp/nvim-autopairs
 
+---@module 'lazy'
+---@type LazySpec
 return {
   'windwp/nvim-autopairs',
   event = 'InsertEnter',

lua/kickstart/plugins/debug.lua

@@ -6,6 +6,8 @@
 -- be extended to other languages as well. That's why it's called
 -- kickstart.nvim and not kitchen-sink.nvim ;)
 
+---@module 'lazy'
+---@type LazySpec
 return {
   -- NOTE: Yes, you can install new plugins here!
   'mfussenegger/nvim-dap',
@@ -100,11 +102,13 @@ return {
 
     -- Dap UI setup
     -- For more information, see |:help nvim-dap-ui|
+    ---@diagnostic disable-next-line: missing-fields
     dapui.setup {
       -- Set icons to characters that are more likely to work in every terminal.
       --    Feel free to remove or use ones that you like more! :)
       --    Don't feel like these are good choices.
       icons = { expanded = '▾', collapsed = '▸', current_frame = '*' },
+      ---@diagnostic disable-next-line: missing-fields
       controls = {
         icons = {
           pause = '⏸',

lua/kickstart/plugins/gitsigns.lua

@@ -2,9 +2,14 @@
 -- NOTE: gitsigns is already included in init.lua but contains only the base
 -- config. This will add also the recommended keymaps.
 
+---@module 'lazy'
+---@type LazySpec
 return {
   {
     'lewis6991/gitsigns.nvim',
+    ---@module 'gitsigns'
+    ---@type Gitsigns.Config
+    ---@diagnostic disable-next-line: missing-fields
     opts = {
       on_attach = function(bufnr)
         local gitsigns = require 'gitsigns'

lua/kickstart/plugins/indent_line.lua

@@ -1,9 +1,13 @@
+---@module 'lazy'
+---@type LazySpec
 return {
   { -- Add indentation guides even on blank lines
     'lukas-reineke/indent-blankline.nvim',
     -- Enable `lukas-reineke/indent-blankline.nvim`
     -- See `:help ibl`
     main = 'ibl',
+    ---@module 'ibl'
+    ---@type ibl.config
     opts = {},
   },
 }

lua/kickstart/plugins/lint.lua

@@ -1,3 +1,5 @@
+---@module 'lazy'
+---@type LazySpec
 return {
 
   { -- Linting

lua/kickstart/plugins/neo-tree.lua

@@ -1,6 +1,8 @@
 -- Neo-tree is a Neovim plugin to browse the file system
 -- https://github.com/nvim-neo-tree/neo-tree.nvim
 
+---@module 'lazy'
+---@type LazySpec
 return {
   'nvim-neo-tree/neo-tree.nvim',
   version = '*',
@@ -13,6 +15,8 @@ return {
   keys = {
     { '\\', ':Neotree reveal<CR>', desc = 'NeoTree reveal', silent = true },
   },
+  ---@module 'neo-tree'
+  ---@type neotree.Config
   opts = {
     filesystem = {
       window = {