feat(sfu): add mediasoup runtime and router capabilities endpoint

Backend/media/sfu/noop.ts

@@ -64,6 +64,13 @@ export class NoopSfuService implements SfuService {
     return this.registry.get(streamSessionId);
   }
 
+  async getRouterRtpCapabilities(_streamSessionId: string): Promise<Record<string, unknown> | null> {
+    return {
+      codecs: [{ mimeType: 'video/VP8', clockRate: 90000, kind: 'video' }],
+      headerExtensions: [],
+    };
+  }
+
   async listSessions(): Promise<SfuSessionDescriptor[]> {
     return this.registry.list();
   }
@@ -91,6 +98,12 @@ export class NoopSfuService implements SfuService {
     return {
       transportId,
       iceServers: toIceServers(),
+      transportOptions: {
+        id: transportId,
+        iceParameters: {},
+        iceCandidates: [],
+        dtlsParameters: {},
+      },
     };
   }
 
@@ -105,6 +118,12 @@ export class NoopSfuService implements SfuService {
     return {
       transportId,
       iceServers: toIceServers(),
+      transportOptions: {
+        id: transportId,
+        iceParameters: {},
+        iceCandidates: [],
+        dtlsParameters: {},
+      },
     };
   }