fix: latest treesitter expects ;; extends (#245)

If this comment is not present it will overwrite all existing queries
with the content of the respective file.
Also move files from queries/go -> after/queries/go to ensure they are
loaded after e.g. nvim-treesitter queries.

after/queries/go/injections.scm

@@ -1,3 +1,4 @@
+;; extends
 (
  (const_spec
   name: (identifier) @_id

after/queries/go/locals.scm

@@ -1,3 +1,4 @@
+;; extends
 (field_declaration
   name: (field_identifier) @definition.field)