SIENTIAPDE-1174

Update requirements and environment configurations

- Changed the sientia-dataops-library dependency to a relative path in requirements.txt.
- Updated image tag to 0.3.0 in values.yaml.
- Renamed HTTP_SERVER_PORT to HTTP_METRICS_PORT in app.py and updated its default value to 9090.
- Added TAG_WRITTEN_COUNT metric in metrics.py to track writing processes.
- Incremented TAG_WRITTEN_COUNT in DataManager upon successful data insertion.

ingestor/app.py

@@ -66,7 +66,7 @@ def signal_handler(_signum, _frame):
 
 def start_prometheus_server():
     try:
-        port = int(os.getenv("HTTP_SERVER_PORT", 4840))
+        port = int(os.getenv("HTTP_METRICS_PORT", 9090))
         start_http_server(port)
         print(f"Prometheus server started on port {port}.")
         metrics.APP_UP.labels(pod_id=POD_ID).set(1)  # Mark app as UP