nvim: Extraction completion setup into own module

As a first step to disentangle the ide.lua module into completion,
formatting, lsp (and maybe lint?), this separates the completion module
into its own file.

nvim/.config/nvim/lua/plugins/ide.lua

@@ -195,39 +195,6 @@ return {
 		end,
 	},
 
-	-- completion setup
-	{
-		"hrsh7th/nvim-cmp",
-		branch = "main",
-		dependencies = {
-			"andersevenrud/cmp-tmux",
-			"cbarrete/completion-vcard",
-			"f3fora/cmp-spell",
-			"hrsh7th/cmp-nvim-lsp",
-			"hrsh7th/cmp-path",
-			"hrsh7th/cmp-buffer",
-			"hrsh7th/cmp-calc",
-			"hrsh7th/cmp-cmdline",
-			"hrsh7th/cmp-nvim-lua",
-			"hrsh7th/cmp-nvim-lsp-signature-help",
-			"dmitmel/cmp-digraphs",
-			"jc-doyle/cmp-pandoc-references",
-			"kdheepak/cmp-latex-symbols",
-			"lukas-reineke/cmp-rg",
-			"crispgm/cmp-beancount",
-			"ray-x/cmp-treesitter",
-			"saadparwaiz1/cmp_luasnip",
-			{
-				"L3MON4D3/LuaSnip",
-				dependencies = { "rafamadriz/friendly-snippets" },
-			},
-		},
-		config = function()
-			require("plugins.config.cmp")
-		end,
-		event = { "InsertEnter", "CmdlineEnter" },
-	},
-
 	-- useful quickfix-like buffer
 	{
 		"folke/trouble.nvim",