Split neovim lua configuration into separate files

These seperate files should be put into $HOME/.config/nvim/lua

nvim/lua/auto-commands.lua

@@ -0,0 +1,27 @@
+--colorscheme
+vim.cmd('colorscheme space_vim_theme')
+vim.cmd('syntax enable')
+
+--open folds by default
+vim.cmd('autocmd Syntax * normal zR')
+
+--file specific formatting
+vim.cmd([[
+	autocmd Filetype python,bash,sh,java,php,json
+	\ setlocal tabstop=4 softtabstop=4 shiftwidth=4
+	\ expandtab autoindent fileformat=unix
+]])
+
+vim.cmd([[
+	autocmd Filetype css,scss,html,htmldjango,javascript,yaml
+	\ setlocal tabstop=2 softtabstop=2 shiftwidth=2
+	\ expandtab autoindent
+]])
+
+--color trailing spaces with red color
+vim.cmd('highlight ExtraWhitespace ctermbg=green guibg=green')
+vim.cmd('match ExtraWhitespace /s+$/')
+vim.cmd('autocmd BufWinEnter * match ExtraWhitespace /s+$/')
+vim.cmd('autocmd InsertEnter * match ExtraWhitespace /s+%#@<!$/')
+vim.cmd('autocmd InsertLeave * match ExtraWhitespace /s+$/')
+vim.cmd('autocmd BufWinLeave * call clearmatches()')