Update yarp.json with granular routing rules

Renamed the route "receiver-ui" to "receiver-ui-receiver" and added new routes for more specific path handling:
- "receiver-ui-receiver" for `/receiver/{**catch-all}`.
- "receiver-ui-sender" for `/sender/{**catch-all}`.
- "receiver-ui-envelope" for `/envelope/{**catch-all}`.
- "receiver-ui-static-assets" for `{**catch-all}` as a fallback.

These changes improve routing granularity for the "receiver-ui" cluster.

EnvelopeGenerator.API/yarp.json

@@ -1,9 +1,33 @@
 {
   "ReverseProxy": {
     "Routes": {
-      "receiver-ui": {
+      "receiver-ui-receiver": {
         "ClusterId": "receiver-ui",
         "Order": 100,
+        "Match": {
+          "Path": "/receiver/{**catch-all}",
+          "Methods": [ "GET", "HEAD" ]
+        }
+      },
+      "receiver-ui-sender": {
+        "ClusterId": "receiver-ui",
+        "Order": 100,
+        "Match": {
+          "Path": "/sender/{**catch-all}",
+          "Methods": [ "GET", "HEAD" ]
+        }
+      },
+      "receiver-ui-envelope": {
+        "ClusterId": "receiver-ui",
+        "Order": 100,
+        "Match": {
+          "Path": "/envelope/{**catch-all}",
+          "Methods": [ "GET", "HEAD" ]
+        }
+      },
+      "receiver-ui-static-assets": {
+        "ClusterId": "receiver-ui",
+        "Order": 999,
         "Match": {
           "Path": "{**catch-all}",
           "Methods": [ "GET", "HEAD" ]
@@ -49,3 +73,4 @@
     }
   }
 }
+