Refactor in Analytics, Telemetry, and KpiManager Services and Manifest Files to Reflect Generic DB Changes.

- Improvements made to `tfs.sh` script.
- Added `CRDB_DATABASE` environment variable to all monitoring service manifest files and the context manifest file.
- Removed the DB engine file from all monitoring services and moved it to `common.tools.database`.
- Each `<service_name>_DB.py` will now retrieve the database name from the environment variable.

Proto:
- Added `Duration_s` field to the proto file.

Frontend:
- Added `SelectAnalyzer` logic.
- Improved message formatting in the `create_analyzer_filter()` function.
- Added a test case: `test_SelectAnalytics`.

Backend:
- Renamed the `RunSparkStreamer` method to `StartSparkStreamer`.
- Updated the `StartRequestListener` method to return `(thread, stop_event)`.
- Added a `StopRequestListener` method to stop the listener.

Database:
- Added the `select_with_filter` method with actual logic implementation.
- Updated the `ConvertRowToAnalyzer` method to correctly read the `operation_mode` ENUM value.

- Created the Analytic Engine, Model, and DB files.
- Added the DB connection.
- Added `add_row_to_db` in `StartCollector`.
- Added `delete_db_row_by_id` in `StopCollector`.
- Improved message formatting.
- Added a DB test file.

- Changed the column type of the start and end timestamps to Float.
- Added ConvertRowToCollector() in TelemetryModel.
- Renamed the class variable from "DBobj" to "tele_db_obj".
- Renamed the local variable from "collector_id" to "collector_uuid".
- Added PublishStopRequestOnKafka() to publish the stop collector request on Kafka.
- Improved the test files.

- updated test file to log DEBUG cmd
- change the class name of "TelemetryDBmanager" to "TelemeterDB"
- corrected the DB name
- move messages.py and test files to correcte location.

- TelemetryEngine.py is updated.
- TelemetryModel.py is refined.
- Optimized DB operation were added in TelemetryDB.py

- refine Kpi_DB.py methods.
- improve description of messages.
- imporve the text description.

- comment is added in Kpi DB file for future reference.

- refine Kpi_DB.py methods.
- improve description of messages.
- imporve the text description.

- comment is added in Kpi DB file for future reference.

- Test was failing due to a "NotFoundException."
- Replaced with None and made approriate changes in files (Kpi_DB.py and KpiManagerServiceImpl) to handle the None value.

- fixes deployment of KPI Writer and API