Version 0.4.0

Changes:
- put ObservabilityMiddleware before ExceptionHandlerMiddleware to avoid repetative code
- add application startup and last metrics update metrics along with CPU usage metric and threads count
- move host and port to new uvicorn section at config along with new reload and forwarded_allow_ips
- add request_id and remove trace_id/span_id generation if tracing is disabled
- move logging logic from utils to observability
- pass trace_id/span_id in HEX form

deploy/configs/api.yaml.jinja

@@ -1,6 +1,10 @@
 app:
-  host: 0.0.0.0
-  port: 8080
+  uvicorn:
+    host: 0.0.0.0
+    port: 8080
+    reload: true
+    forwarded_allow_ips:
+      - 127.0.0.1
   debug: true
   cors:
     allow_origins: ["*"]
@@ -25,7 +29,5 @@ observability:
   prometheus:
     host: 0.0.0.0
     port: 9090
-    urls_mapping:
-      /api/debug/.*: /api/debug/*
   jaeger:
     endpoint: http://otel:4318/v1/traces