Add Bazel bzlmod support into Python lexer (#947)

https://bazel.build/concepts/build-ref

"such a boundary marker file could be MODULE.bazel, REPO.bazel, or in
legacy contexts, WORKSPACE or WORKSPACE.bazel."

Author: farcop

lexers/embedded/python.xml

@@ -19,6 +19,10 @@
     <filename>BUILD</filename>
     <filename>BUILD.bazel</filename>
     <filename>WORKSPACE</filename>
+    <filename>WORKSPACE.bzlmod</filename>
+    <filename>WORKSPACE.bazel</filename>
+    <filename>MODULE.bazel</filename>
+    <filename>REPO.bazel</filename>
     <filename>*.tac</filename>
     <mime_type>text/x-python</mime_type>
     <mime_type>application/x-python</mime_type>
@@ -586,4 +590,4 @@
       </rule>
     </state>
   </rules>
-</lexer>
+</lexer>