add history in chat to record meeting created!

src/app/services/chat/chat-methods.service.ts

@@ -0,0 +1,31 @@
+import { Injectable } from '@angular/core';
+import { ChatService } from '../chat.service';
+
+@Injectable({
+  providedIn: 'root'
+})
+export class ChatMethodsService {
+
+  constructor(private chatService: ChatService) {
+  }
+
+  sendMessage(roomId:string, data:any) {
+
+    let body = {
+      "message":
+      {
+        "rid": roomId,
+        "msg":"",
+        "file":{
+          "type": "application/meeting",
+          "subject": data.subject,
+          "start_date": data.start,
+          "end_date": data.end,
+          "venue": data.venue,
+          "id": data.id,
+        }
+      }
+    }
+    this.chatService.sendMessage(body).subscribe(res=> {});
+  }
+}