Move formatting configuration to separate file

templates/nvim/init.lua.j2

@@ -1,6 +1,5 @@
 -- {{ ansible_managed }}
 
--- TODO: load environment vars from .env files
 require('options')
 require('_filetype')
 require('colorscheme')
@@ -12,3 +11,4 @@ require('indent-blankline')
 require('_nvim-tree')
 require('lua-line')
 require('_source-link')
+require('formatting')