feat: Add live agent load report api (#4297)

This change allows the admin user to fetch conversation metrics for an account, agents, and filter conversation metrics for a specific agent.

Fixes #4305

swagger/definitions/resource/reports/conversation/agent.yml

@@ -0,0 +1,18 @@
+type: object
+properties:
+  user:
+    type: object
+    properties:
+      id:
+        type: number
+      name:
+        type: string
+      thumbnail:
+        type: string
+  metric:
+    type: object
+    properties:
+      open:
+        type: number
+      unattended:
+        type: number

swagger/definitions/resource/reports/summary.yml

@@ -0,0 +1,29 @@
+type: object
+properties:
+  avg_first_response_time:
+    type: string
+  avg_resolution_time:
+    type: string
+  conversations_count:
+    type: number
+  incoming_messages_count:
+    type: number
+  outgoing_messages_count:
+    type: number
+  resolutions_count:
+    type: number
+  previous:
+    type: object
+    properties:
+      avg_first_response_time:
+        type: string
+      avg_resolution_time:
+        type: string
+      conversations_count:
+        type: number
+      incoming_messages_count:
+        type: number
+      outgoing_messages_count:
+        type: number
+      resolutions_count:
+        type: number