chore(vim): Converted some config and remapping to lua

.config/nvim/lua/null/config.lua

@@ -0,0 +1,12 @@
+require("null.remap")
+
+local o = vim.opt
+local g = vim.g
+
+o.nu = true
+o.relativenumber = true
+
+g.mapleader = " "
+g.guifont = { "Sarasa UI J", ":h16" }
+
+require("oil").setup()

.config/nvim/lua/null/init.lua

@@ -1,6 +1,6 @@
--- vim_uni
-require("null.config")
 -- vim_plug
 require("null.plug")
+-- vim_uni
+require("null.config")
 -- vim_nix
 require("null.nix")  -- n*x specific stuff

.config/nvim/lua/null/plug.lua

@@ -0,0 +1,21 @@
+local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
+if not (vim.uv or vim.loop).fs_stat(lazypath) then
+	vim.fn.system({
+		"git",
+		"clone",
+		"--filter=blob:none",
+		"https://github.com/folke/lazy.nvim.git",
+		"--branch=stable", -- latest stable release
+		lazypath,
+	})
+end
+vim.opt.rtp:prepend(lazypath)
+
+require("lazy").setup({
+	{
+  		"stevearc/oil.nvim",
+  		opts = {},
+  		dependencies = { "nvim-tree/nvim-web-devicons" },
+	},
+	"tpope/vim-commentary", -- shortcut to comment a line
+})

.config/nvim/lua/null/remap.lua

@@ -0,0 +1,23 @@
+-- Loaded by `null.config`
+local remap = function(mode, key, target, opts)
+    vim.api.nvim_set_keymap(mode, key, target, opts or {
+	    noremap = true,
+	    silent = true,
+    })
+end
+
+-- Map Ctrl+U as U so it can be used as redo
+remap("n", "<C-u>", "U")
+-- Map U as redo
+remap("n", "U", "<C-r>")
+
+-- Yank and Put
+remap("n", "<C-y>", '"+y')
+remap("n", "<C-p>", '"+p')
+remap("n", "<C-Y>", '"+y')
+remap("n", "<C-P>", '"+p')
+
+-- Comment a line like how it is on VSC (using vim-commentary)
+remap("n", "<C-/>", "gcc", { noremap = false })
+remap("v", "<C-/>", "gc", { noremap = false })
+remap("i", "<C-/>", "<esc>gcc", { noremap = false })