Playback activity monitoring: add player types

Add player types for playback activity monitoring:
 - AAudio
 - hardware sources
 - proxy for external players

Test: n/a
Bug: 62027849
Change-Id: I17f4879dd79cc89eb7db373754a79e2e38c97457
diff --git a/include/audiomanager/AudioManager.h b/include/audiomanager/AudioManager.h
index 834dcbd..009dc52 100644
--- a/include/audiomanager/AudioManager.h
+++ b/include/audiomanager/AudioManager.h
@@ -26,6 +26,9 @@
 typedef enum {
     PLAYER_TYPE_SLES_AUDIOPLAYER_BUFFERQUEUE = 11,
     PLAYER_TYPE_SLES_AUDIOPLAYER_URI_FD = 12,
+    PLAYER_TYPE_AAUDIO = 13,
+    PLAYER_TYPE_HW_SOURCE = 14,
+    PLAYER_TYPE_EXTERNAL_PROXY = 15,
 } player_type_t;
 
 typedef enum {