feat(connector-linter): add VC3xx code checks

Author: jabesq

shared/connector_linter/connector_linter/checks/vc3xx_code/__init__.py

@@ -0,0 +1,27 @@
+"""VC3xx — Code quality checks.
+
+VC301: Connector must define an author identity.
+VC302: Author must be referenced on STIX entities (created_by_ref).
+VC303: CONNECTOR_TYPE must be defined in application code, not read from env.
+VC304: Ensure TLP markings are checked (check_max_tlp).
+VC305: Connector must implement Base Settings from connectors-sdk.
+VC306: Connector log level should default to 'error'.
+VC307: Except blocks should use error/warning logging, not debug/info.
+VC308: Main entry point must use traceback for error handling.
+VC309: Connector must use only absolute imports, no relative imports.
+VC310: External references must not be added by default to non-Identity objects.
+VC311: Connector should use TLP markings on entities with appropriate level.
+VC312: send_stix2_bundle must use cleanup_inconsistent_bundle=True.
+VC313: STIX SDO/SRO objects must use pycti.XXX.generate_id() for deterministic IDs.
+VC314: External-import connectors must use schedule_process or schedule_iso.
+VC315: Connector must call initiate_work before processing.
+VC316: Connector must close work with to_processed after processing.
+VC317: initiate_work should only be called when data is available.
+VC318: Internal-enrichment connectors must use helper.listen().
+VC319: Enrichment connector must return original bundle when not in scope.
+VC320: Enrichment connector must enforce TLP access control.
+VC321: Enrichment connector must be playbook-compatible.
+VC322: Enrichment connector must read data['stix_objects'] (former bundle).
+VC323: Stream connectors must use helper.listen_stream().
+VC324: Relationship should not set both start_time and stop_time.
+"""