fix(core): update

ts/interfaces/index.ts

@@ -1,3 +1,4 @@
 export * from './http.interfaces';
 export * from './universechannel.interfaces';
 export * from './universemessage.interfaces';
+export * from './universeactions.interfaces';

ts/interfaces/universeactions.interfaces.ts

@@ -0,0 +1,9 @@
+export type IServerCallActions = 'subscribe' | 'sendmessage' | 'unsubscribe';
+
+/**
+ * the interface for a subscription
+ */
+export interface IServerCallSubscribeActionPayload {
+  name: string;
+  passphrase: string;
+}