Add vimrc Elixir config

.vimrc

@@ -18,6 +18,7 @@ Plugin 'tpope/vim-surround'
 Plugin 'mhinz/vim-startify'
 Plugin 'vim-airline/vim-airline'
 Plugin 'dense-analysis/ale'
+Plugin 'elixir-editors/vim-elixir'
 Plugin 'noahfrederick/vim-hemisu'
 
 " End Vundle startup, reset changed values as desired
@@ -29,6 +30,11 @@ filetype plugin indent on
 " a distro that defaults stock pylint to Python 3
 let g:ale_python_pylint_executable = "pylint3"
 
+let g:ale_fixers = {
+            \'*': ['remove_trailing_lines', 'trim_whitespace'],
+            \'elixir': ['mix_format']
+            \}
+
 " Visual themeing
 if exists('+termguicolors')
     set termguicolors                 "Enable 256 colors