ci: include dev-app files from pullapprove checks

At dev-app to pullaprove

Author: alan-agius4

.pullapprove.yml

@@ -121,6 +121,7 @@ groups:
       - >
         contains_any_globs(files.exclude('packages/core/primitives/*'), [
           'contributing-docs/public-api-surface.md',
+          'dev-app/**/{*,.*}',
           'integration/**/{*,.*}',
           'modules/**/{*,.*}',
           'packages/animations/**/{*,.*}',