libobs: Add audio source hotkeys

libobs/obs-hotkey.c

@@ -1495,3 +1495,15 @@ void obs_hotkey_update_atomic(obs_hotkey_atomic_update_func func, void *data)
 
 	unlock();
 }
+
+void obs_hotkeys_set_audio_hotkeys_translations(
+		const char *mute, const char *unmute,
+		const char *push_to_mute, const char *push_to_talk)
+{
+#define SET_T(n) bfree(obs->hotkeys.n); obs->hotkeys.n = bstrdup(n)
+	SET_T(mute);
+	SET_T(unmute);
+	SET_T(push_to_mute);
+	SET_T(push_to_talk);
+#undef SET_T
+}