feat(metrics): add basic prometheus metrics, cluster scraping

7project/charts/myapp-chart/templates/monitoring.yaml

@@ -0,0 +1,14 @@
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: fastapi-servicemonitor
+  labels:
+    release: prometheus
+spec:
+  selector:
+    matchLabels:
+      app: {{ .Values.app.name }}
+  endpoints:
+    - port: 8000
+      path: /metrics
+      interval: 15s