feat: billing layer v1.3.86 — PostgreSQL statistics

- internal/billing: Store interface + pgStore (pgx/v5 pool) + NoopStore
- factory.go: NewStore() from BILLING_DSN env var (NoopStore fallback)
- Server.billing: injected into Config, initialized in main
- handleInvokeFunction: record invocation (TriggerConsole)
- invokeInternalFunction: record invocation (TriggerHTTP)
- handleCreateFunction: record event_type=create
- handleCloneFunction: record event_type=clone
- handleDeleteFunction: record event_type=delete
- table: invocations (namespace, function_name, trigger_type, duration_ms, status_code...)
- BILLING_DSN added to console.yaml
- pgx/v5 added to go.mod/go.sum

console/deploy/console.yaml

@@ -55,7 +55,7 @@ spec:
       serviceAccountName: fission-console
       containers:
         - name: console
-          image: naeel/fission-console:v1.3.85
+          image: naeel/fission-console:v1.3.86
           imagePullPolicy: Always
           ports:
             - containerPort: 8090
@@ -82,6 +82,8 @@ spec:
                   key: password
             - name: FISSION_STORAGESVC_URL
               value: "http://storagesvc.fission.svc.cluster.local"
+            - name: BILLING_DSN
+              value: "postgres://super:BQUF5ruECa1ZFlq4wYt3gPJUEmtBMkA9QNK4MM5Sd8al4ArMDlmT16DIKHYBPyif@postgresqlk8s-master.dc5db45d-f8b4-4fd0-ad33-ec4dd017f2d5.svc.cluster.local:5432/sqsdb"
           livenessProbe:
             httpGet:
               path: /health