* feat(defaults.lua): add relative line numbers

* feat(keymaps.lua): add keymaps for buffer navigation, terminal, and nvimtree
* feat(nvim-tree.lua): add nvim-tree plugin with setup function

after/plugin/defaults.lua

@@ -0,0 +1 @@
+vim.opt.relativenumber = true

after/plugin/keymaps.lua

@@ -0,0 +1,25 @@
+local opts = { noremap = true, silent = true }
+
+local term_opts = { silent = true }
+
+function keymap(mode, lhs, rhs, opts)
+    local options = { noremap = true }
+    if opts then
+        options = vim.tbl_extend("force", options, opts)
+    end
+    vim.api.nvim_set_keymap(mode, lhs, rhs, options)
+end
+
+-- Navigate buffers
+keymap("n", "<S-l>", ":bnext<CR>", opts)
+keymap("n", "<S-h>", ":bprevious<CR>", opts)
+
+-- Terminal
+-- Better window navigation
+keymap("n", "<C-h>", "<C-w>h", opts)
+keymap("n", "<C-j>", "<C-w>j", opts)
+keymap("n", "<C-k>", "<C-w>k", opts)
+keymap("n", "<C-l>", "<C-w>l", opts)
+
+-- Nvimtree
+keymap('n', '<leader>n', ":NvimTreeToggle<cr>")

lua/custom/plugins/nvim-tree.lua

@@ -0,0 +1,12 @@
+return {
+    {
+        "nvim-tree/nvim-tree.lua",
+        version = "*",
+        dependencies = {
+            "nvim-tree/nvim-web-devicons",
+        },
+        config = function()
+            require("nvim-tree").setup {}
+        end,
+    }
+}