🔧(helm) adapt helm chart

Done:
- Rename all occurrences of "impress" to "meet".
- Update Agent Connect secrets credentials for the dev environment.
- Add new development secrets for LiveKit.
- Remove Minio from the dev stack (no cold storage required).
- Add LiveKit chart to the stack.
- Remove templates and values related to the WebSocket server.

The integration of LiveKit was inspired by an example from the "numerique-gouve/infrastructure" repo.
However, a notable issue persists with LiveKit's default chart: we are unable to override
the namespace, resulting in all LiveKit components running in the default namespace.

thx to @rouja for his help.

src/helm/env.d/dev/values.livekit.yaml.gotmpl

@@ -0,0 +1,33 @@
+replicaCount: 1
+terminationGracePeriodSeconds: 18000
+
+livekit:
+  log_level: debug
+  rtc:
+    use_external_ip: true
+    port_range_start: 50000
+    port_range_end: 60000
+    tcp_port: 7881
+  redis:
+    address:
+  keys:
+
+loadBalancer:
+  type: nginx
+  annotations:
+    nginx.ingress.kubernetes.io/rewrite-target: /
+    nginx.ingress.kubernetes.io/ssl-redirect: "true"
+    cert-manager.io/cluster-issuer: "letsencrypt-prod"
+  tls:
+    - hosts:
+        - livekit.127.0.0.1.nip.io
+      secretName: livekit-dinum-cert
+
+autoscaling:
+  enabled: false
+  minReplicas: 1
+  maxReplicas: 5
+  targetCPUUtilizationPercentage: 60
+
+nodeSelector: {}
+resources: {}