Add CM Write Data Job Scenario to K6 Test Suite

Add CM Write Data Job Scenario to K6 Test Suite

- Added 'write_data_job_scenario' in the K6 test configuration for small
  and large data size.
- It helps to simulate lower / higher load and monitor system behavior under infrequent
  write operations.
- CSV report and other alignment.
- Created a test metadata json to refer from all the places.
- Script to generate trends and thresholds

Issue-ID: CPS-2716
Change-Id: I4ba5728a2738c3454f1652d6db88ad599f2192c9
Signed-off-by: sourabh_sourabh <sourabh.sourabh@est.tech>