Added OCAml and Markdown lua support

lsp/ocamllsp.lua

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+return {
+  cmd = { 'ocamllsp' },
+  filetypes = {
+    'ocaml',
+    'ocaml.interface',
+    'ocaml.menhir',
+    'ocaml.ocamllex',
+    'dune',
+    'reason',
+  },
+  root_markers = {
+    { 'dune-project', 'dune-workspace' },
+    { '*.opam', 'esy.json', 'package.json' },
+    '.git',
+  },
+  settings = {},
+}

lua/custom/init.lua

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+-- Minimal OCaml behavior: ocp-indent for typing, ocamlformat via ocamllsp on save.
+-- 1) Disable ancient builtin ocaml indent script (we will use ocp-indent)
+-- 4) Format-on-save: use only ocamllsp to format the buffer before write.
+--    Keeps formatting deterministic and avoids other formatters stepping in.
+vim.api.nvim_create_autocmd('BufWritePre', {
+  pattern = { '*.ml', '*.mli' },
+  callback = function()
+    if vim.bo.filetype == 'ocaml' then
+      vim.lsp.buf.format {
+        async = false,
+        filter = function(client)
+          return client.name == 'ocamllsp'
+        end,
+      }
+    end
+  end,
+})

lua/custom/plugins/render-markdown.lua

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+return {
+  'MeanderingProgrammer/render-markdown.nvim',
+  dependencies = { 'nvim-treesitter/nvim-treesitter', 'nvim-mini/mini.nvim' }, -- if you use the mini.nvim suite
+  -- dependencies = { 'nvim-treesitter/nvim-treesitter', 'nvim-mini/mini.icons' },        -- if you use standalone mini plugins
+  -- dependencies = { 'nvim-treesitter/nvim-treesitter', 'nvim-tree/nvim-web-devicons' }, -- if you prefer nvim-web-devicons
+  ---@module 'render-markdown'
+  ---@type render.md.UserConfig
+  opts = {},
+}