Added NeoVim config files

files/system/etc/xdg/nvim/lua/options.lua

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+-- use `:h <option>` to figure out meaning
+vim.opt.clipboard = "unnamedplus" -- use system keyboard
+vim.opt.completeopt = { "menu", "noinsert", "noselect" }
+vim.opt.mouse = "a" -- supposedly to allow the mouse to be used in nvim
+
+-- Tab settings
+vim.opt.tabstop = 4 -- set number of visual spaces per \t (Tab)
+vim.opt.softtabstop = 4 -- set number of space in tab when editing
+vim.opt.shiftwidth = 4 -- insert 4 spaces on a tab
+vim.opt.expandtab = false -- for python apparently, treat tabs as spaces
+
+-- UI config
+vim.opt.number = true -- show the absolute number
+vim.opt.relativenumber = true -- to add numbers to each line on the left side (line numbers?)
+vim.opt.cursorline = true -- highlights the line where the cursor is
+vim.opt.splitbelow = true -- sets new splits to be opened below
+vim.opt.splitright = true -- sets new splits to be opened to the right
+vim.opt.termguicolors = true -- enables 24-bit RGB color in Terminal UI
+-- vim.opt.showmode = false		-- removes the --INSERT-- like UI at the bottom
+
+-- Search settings
+vim.opt.incsearch = true -- search as characters are entered
+--vim.opt.hlsearch = false		-- do not highlight matches
+vim.opt.ignorecase = true -- ignore cases by default
+vim.opt.smartcase = true -- when capitalized, be case sensitive