Finally modularize neovim configuration

lua/config/formatting.lua

@@ -0,0 +1,34 @@
+-- Formatting configuration
+
+-- Set rustfmt command
+vim.g["rustfmt_command"] = "rustfmt +nightly"
+
+-- Commands to disable/enable formatting
+require("conform").setup({
+	format_on_save = function(bufnr)
+		-- Disable with a global or buffer-local variable
+		if vim.g.disable_autoformat or vim.b[bufnr].disable_autoformat then
+			return
+		end
+		return { timeout_ms = 500, lsp_fallback = true }
+	end,
+})
+
+vim.api.nvim_create_user_command("FormatDisable", function(args)
+	if args.bang then
+		-- FormatDisable! will disable formatting just for this buffer
+		vim.b.disable_autoformat = true
+	else
+		vim.g.disable_autoformat = true
+	end
+end, {
+	desc = "Disable autoformat-on-save",
+	bang = true,
+})
+
+vim.api.nvim_create_user_command("FormatEnable", function()
+	vim.b.disable_autoformat = false
+	vim.g.disable_autoformat = false
+end, {
+	desc = "Re-enable autoformat-on-save",
+})