feat: Implement Call Rejection + Introduction of Socket API (#1882)

* Initial stage

* ESLint

* eslint is annoying

* fix: distinguish Wap from Socket's Wap

index.d.ts

@@ -1326,6 +1326,9 @@ declare namespace WAWebJS {
         webClientShouldHandle: boolean,
         /** Object with participants */
         participants: object
+
+        /** Reject the call */
+        reject: () => Promise<void>
     }
 
     /** Message type List */