Add code (#311)

Author: freddyaboulton

frontend/shared/StaticAudio.svelte

@@ -22,6 +22,7 @@
 
   export let server: {
     offer: (body: any) => Promise<any>;
+    turn: () => Promise<any>;
   };
 
   let stream_state: "open" | "closed" | "waiting" = "closed";

frontend/shared/StaticVideo.svelte

@@ -12,6 +12,7 @@
   export let on_change_cb: (msg: "change" | "tick") => void;
   export let server: {
     offer: (body: any) => Promise<any>;
+    turn: () => Promise<any>;
   };
 
   let video_element: HTMLVideoElement;