initial nvim config

.config/nvim/init.lua

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+require('plugins')
+require('settings')
+require('keymaps')

.config/nvim/lua/keymaps.lua

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+function map(mode, shortcut, command)
+    vim.api.nvim_set_keymap(mode, shortcut, command, { noremap = true, silent = true })
+end
+
+map('n', '<M-Left>', ':tabprevious<cr>')
+map('n', '<M-Right>', ':tabnext<cr>')

.config/nvim/lua/plugins.lua

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+local fn = vim.fn
+local install_path = fn.stdpath('data')..'/site/pack/packer/start/packer.nvim'
+if fn.empty(fn.glob(install_path)) > 0 then
+    packer_bootstrap = fn.system({'git', 'clone', '--depth', '1', 'https://github.com/wbthomason/packer.nvim', install_path})
+    vim.cmd [[packadd packer.nvim]]
+end
+
+require('packer').startup(function(use)
+    use 'https://github.com/wbthomason/packer.nvim'
+    use 'https://github.com/GuiLra/vim'
+
+    if packer_bootstrap then
+        require('packer').sync()
+    end
+end)
+
+vim.cmd([[
+    augroup packer_user_config
+        autocmd!
+        autocmd User PackerComplete PackerCompile
+        autocmd BufWritePost plugins.lua source <afile> | PackerInstall
+    augroup end
+]])
+

.config/nvim/lua/settings.lua

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+vim.o.number = true     -- line numbers
+vim.o.list = true       -- show whitespace
+
+vim.o.expandtab = true  -- indent using spaces
+vim.o.tabstop = 4       -- 1 tab = 4 spaces
+vim.o.shiftwidth = 4    -- 1 indentation = 4 spaces
+
+-- theme
+vim.o.termguicolors = true
+vim.o.background = 'dark'
+vim.cmd('colorscheme omni')