Add support for Brewfile

Author: petamas

identify/extensions.py

@@ -373,6 +373,7 @@
     'AUTHORS': EXTENSIONS['txt'],
     'bblayers.conf': EXTENSIONS['bb'],
     'bitbake.conf': EXTENSIONS['bb'],
+    'Brewfile': EXTENSIONS['rb'],
     'BUILD': EXTENSIONS['bzl'],
     'Cargo.toml': EXTENSIONS['toml'] | {'cargo'},
     'Cargo.lock': EXTENSIONS['toml'] | {'cargo-lock'},