Update extra-source-files

Author: July541

plugins/hls-module-name-plugin/hls-module-name-plugin.cabal

@@ -16,6 +16,8 @@ extra-source-files:
   LICENSE
   test/testdata/**/*.yaml
   test/testdata/**/*.hs
+  test/testdata/**/*.cabal
+  test/testdata/**/cabal.project
 
 library
   exposed-modules:  Ide.Plugin.ModuleName