fix(interceptor): fix rpc exception message in http to grpc interceptor

Handles all sorts of http exceptions from rpc client.
No need to use extra try catch for parse error in grpc to http interceptor.

Refs: mohsenbostan#13
Refs: mohsenbostan#14

lib/interceptors/http-to-grpc.interceptor.ts

@@ -40,7 +40,12 @@ export class HttpToGrpcInterceptor implements NestInterceptor {
         return throwError(
           () =>
             new RpcException({
-              message: exception.message,
+              message: JSON.stringify({
+                error: exception.message,
+                type:
+                  typeof exception.message === "string" ? "string" : "object",
+                exceptionName: RpcException.name,
+              }),
               code: statusCode,
             }),
         );