clangformat support cuda files (#211)

Author: presburger

autoload/codefmt/clangformat.vim

@@ -118,7 +118,8 @@ function! codefmt#clangformat#GetFormatter() abort
     if &filetype is# 'c' || &filetype is# 'cpp' ||
         \ &filetype is# 'proto' || &filetype is# 'javascript' ||
         \ &filetype is# 'objc' || &filetype is# 'objcpp' ||
-        \ &filetype is# 'typescript' || &filetype is# 'arduino'
+        \ &filetype is# 'typescript' || &filetype is# 'arduino' ||
+        \ &filetype is# 'cuda'
       return 1
     endif
     " Version 3.6 adds support for java