Reformatted code after changing indent width to 2, TODO highlighting

- set all indent widths from 4 to 2
- added plugin to highlight TODO markers, can also be searched
  <leader>ft

lua/options.lua

@@ -4,9 +4,9 @@ vim.opt.completeopt = { 'menu', 'menuone', 'noselect' }
 vim.opt.mouse = 'a'               -- allow the mouse to be used in Nvim
 
 -- Tab
-vim.opt.tabstop = 4      -- number of visual spaces per TAB
-vim.opt.softtabstop = 4  -- number of spacesin tab when editing
-vim.opt.shiftwidth = 4   -- insert 4 spaces on a tab
+vim.opt.tabstop = 2      -- number of visual spaces per TAB
+vim.opt.softtabstop = 2  -- number of spacesin tab when editing
+vim.opt.shiftwidth = 2   -- insert 4 spaces on a tab
 vim.opt.expandtab = true -- tabs are spaces, mainly because of python
 
 -- UI config