Add stubbed cast.framework API implementation

ext/src/shim/framework/classes/CastContext.ts

@@ -0,0 +1,52 @@
+"use strict";
+
+import Image from "../../cast/classes/Image";
+import Session from "../../cast/classes/Session";
+
+import CastOptions from "./CastOptions";
+import CastSession from "./CastSession";
+import CastStateEventData from "./CastStateEventData";
+import SessionStateEventData from "./SessionStateEventData";
+
+
+type EventHandler = (eventData:
+        CastStateEventData
+      | SessionStateEventData) => void;
+
+export default class ApplicationMetadata {
+    public addEventListener (type: string, handler: EventHandler): void {
+        console.info("STUB :: CastContext#addEventListener");
+    }
+
+    public endCurrentSession (stopCasting: boolean): void {
+        console.info("STUB :: CastContext#endCurrentSession");
+    }
+
+    // @ts-ignore
+    public getCastState (): string {
+        console.info("STUB :: CastContext#getCastState");
+    }
+
+    // @ts-ignore
+    public getCurrentSession (): CastSession {
+        console.info("STUB :: CastContext#getCurrentSession");
+    }
+
+    // @ts-ignore
+    public getSessionState (): string {
+        console.info("STUB :: CastContext#getSessionState");
+    }
+
+    public removeEventListener (type: string, handler: EventHandler): void {
+        console.info("STUB :: CastContext#removeEventListener");
+    }
+
+    // @ts-ignore
+    public requestSession (): Promise<string> {
+        console.info("STUB :: CastContext#requestSession");
+    }
+
+    public setOptions (options: CastOptions): void {
+        console.info("STUB :: CastContext#setOptions");
+    }
+}