Add scratch function

nvim/lua/plugins/scratch.lua

@@ -0,0 +1,17 @@
+local function scratch()
+	local fts = vim.fn.getcompletion("", "filetype")
+	vim.ui.select(fts, {
+		prompt = "Scratch ft",
+	}, function(ft)
+		if ft == nil then
+			return
+		end
+		local buf = vim.api.nvim_create_buf(false, true)
+		vim.api.nvim_set_option_value("filetype", ft, { buf = buf })
+		vim.api.nvim_set_current_buf(buf)
+	end)
+end
+
+vim.keymap.set("n", "<leader>s", scratch, { desc = "Scratch" })
+
+return {}