Add audio_call to livestream call types service configs

Author: liviu-timar

stream-video-android-core/src/main/kotlin/io/getstream/video/android/core/notifications/internal/service/CallServiceConfig.kt

@@ -101,6 +101,7 @@ public fun livestreamGuestCallServiceConfig(): CallServiceConfig {
         configs = mutableMapOf(
             Pair(ANY_MARKER, CallTypeServiceConfig()),
             Pair("default", CallTypeServiceConfig()),
+            Pair("audio_call", CallTypeServiceConfig(AudioCallService::class.java)),
             Pair(
                 "livestream",
                 CallTypeServiceConfig(