Include copilot chat and completions.

Refactor configuration into more modules

.config/nvim/lua/plugins/syntax_highlighting.lua

@@ -0,0 +1,55 @@
+return {
+	{
+		"nvim-treesitter/nvim-treesitter",
+		config = function()
+			local config = require("nvim-treesitter.configs")
+			config.setup({
+				-- A list of parser names, or "all" (the listed parsers MUST always be installed)
+				ensure_installed = {
+					"lua",
+					"vim",
+					"vimdoc",
+					"query",
+					"markdown",
+					"markdown_inline",
+					"json",
+					"jsonc",
+					"python",
+					"yaml",
+				},
+
+				-- Install parsers synchronously (only applied to `ensure_installed`)
+				sync_install = false,
+
+				-- Automatically install missing parsers when entering buffer
+				-- Recommendation: set to false if you don't have `tree-sitter` CLI installed locally
+				auto_install = true,
+
+				-- List of parsers to ignore installing (or "all")
+				ignore_install = { "javascript" },
+
+				highlight = {
+					enable = true,
+
+					-- Setting this to true will run `:h syntax` and tree-sitter at the same time.
+					-- Set this to `true` if you depend on 'syntax' being enabled (like for indentation).
+					-- Using this option may slow down your editor, and you may see some duplicate highlights.
+					-- Instead of true it can also be a list of languages
+					additional_vim_regex_highlighting = false,
+				},
+			})
+		end,
+	},
+	{
+		"MeanderingProgrammer/render-markdown.nvim",
+		dependencies = {
+			{ "nvim-treesitter/nvim-treesitter" },
+			{ "nvim-tree/nvim-web-devicons" },
+		},
+		config = function()
+			require("render-markdown").setup({
+				file_types = { "markdown", "copilot-chat" },
+			})
+		end,
+	},
+}