feat(Prime Video): Add Playback speed patch (#5444)

extensions/primevideo/stub/src/main/java/com/amazon/avod/media/playback/VideoPlayer.java

@@ -4,4 +4,10 @@ public interface VideoPlayer {
     long getCurrentPosition();
 
     void seekTo(long positionMs);
+    
+    void pause();
+    
+    void play();
+    
+    boolean isPlaying();
 }

extensions/primevideo/stub/src/main/java/com/amazon/video/sdk/player/Player.java

@@ -0,0 +1,11 @@
+package com.amazon.video.sdk.player;
+
+public interface Player {
+    float getPlaybackRate();
+    
+    void setPlaybackRate(float rate);
+
+    void play();
+    
+    void pause();
+}