feat: migrate gRPC instrumentation from standardrb to Rubocop#1341

kaylareopelle merged 7 commits intoopen-telemetry:mainopen-telemetry/opentelemetry-ruby-contrib:mainfrom

michal-kazmierczak:feat-migrate-grpc-instrumentation-to-rubocopmichal-kazmierczak/opentelemetry-ruby-contrib:feat-migrate-grpc-instrumentation-to-rubocopCopy head branch name to clipboard