Telemetry Start,Stop and select Collector complete implementation

scripts/run_tests_locally-telemetry-backend.sh

src/telemetry/backend/service/TelemetryBackendService.py

src/telemetry/backend/tests/testTelemetryBackend.py

.../frontend/service/TelemetryFrontendServiceServicerImpl.py

src/telemetry/frontend/tests/Messages.py

src/telemetry/frontend/tests/test_frontend.py