vim-patch:9.1.0302: filetype: blueprint files are not recognized (#28292)

Problem:  filetype: blueprint files are not recognized
Solution: Detect '*.bp' files as blueprint files, add
          a minimal filetype plugin (Bruno Belanyi)

See: https://source.android.com/docs/setup/build

closes: vim/vim#14488

6be7ef5bc7

Co-authored-by: Bruno BELANYI <bruno@belanyi.fr>

runtime/lua/vim/filetype.lua

@@ -236,6 +236,7 @@ local extension = {
   bbclass = 'bitbake',
   bl = 'blank',
   blp = 'blueprint',
+  bp = 'bp',
   bsd = 'bsdl',
   bsdl = 'bsdl',
   bst = 'bst',