feat(modules): Added markdown language module.

lua/doom/modules/langs/markdown/init.lua

@@ -0,0 +1,32 @@
+local markdown = {}
+
+markdown.settings = {
+}
+
+markdown.autocmds = {
+  {
+    "FileType",
+    "markdown",
+    function()
+      local langs_utils = require("doom.modules.langs.utils")
+
+      langs_utils.use_lsp("remark_ls")
+
+      vim.defer_fn(function()
+        require("nvim-treesitter.install").ensure_installed("markdown")
+      end, 0)
+
+      -- Setup null-ls
+      if doom.modules.linter then
+        local null_ls = require("null-ls")
+
+        langs_utils.use_null_ls_source({
+          null_ls.builtins.diagnostics.markdownlint,
+        })
+      end
+    end,
+    once = true,
+  },
+}
+
+return markdown