feat: refactor automation for supporting zsm plugin handler logic.

proto/automation.proto

src/analytics/backend/service/AnalyzerHandlers.py

src/analytics/backend/service/Streamer.py

src/automation/.gitlab-ci.yml

src/automation/service/AutomationServiceServicerImpl.py

src/automation/service/zsm_handler_api/ZSMFilterFields.py

src/automation/service/zsm_handler_api/_ZSMHandler.py

src/automation/service/zsm_handler_api/__init__.py

src/automation/service/zsm_handlers/P4INTZSMPlugin.py

src/automation/service/zsm_handlers/__init__.py

src/automation/tests/test_automation_handlers.py