FEAT(web-apps): enable HA with replica 2 and soft anti-affinity

- Add replicaCount: 2 to all web applications
- Add soft pod anti-affinity for node distribution
- Update chart template to handle affinity correctly
- Configure affinity for todo, portfolio, jovies, jotion, joossam, joossam-dev, jaejadle, jaejadle-dev

charts/web-app/values.yaml

@@ -15,7 +15,7 @@ imagePullSecrets:
   - name: ghcr-secret
 
 # Replicas
-replicaCount: 1
+replicaCount: 2
 
 # Container port
 containerPort: 3000
@@ -106,5 +106,10 @@ nodeSelector: {}
 # Tolerations
 tolerations: []
 
-# Affinity
-affinity: {}
+# Affinity - Soft Anti-Affinity to spread pods across nodes
+affinity:
+  podAntiAffinity:
+    preferredDuringSchedulingIgnoredDuringExecution:
+      - weight: 100
+        podAffinityTerm:
+          topologyKey: kubernetes.io/hostname