add unity doc.

unity/PICO-Unity-Integration-SDK-release_3.4.0/Enterprise/Scripts/Enums/PICOCastOptionValueEnum.cs

@@ -0,0 +1,22 @@
+namespace Unity.XR.PICO.TOBSupport
+{
+    public enum PICOCastOptionValueEnum
+    {
+        OPTION_VALUE_RESOLUTION_HIGH,
+        OPTION_VALUE_RESOLUTION_MIDDLE,
+        OPTION_VALUE_RESOLUTION_AUTO,
+        OPTION_VALUE_RESOLUTION_HIGH_2K,
+        OPTION_VALUE_RESOLUTION_HIGH_4K,
+
+        OPTION_VALUE_BITRATE_HIGH,
+        OPTION_VALUE_BITRATE_MIDDLE,
+        OPTION_VALUE_BITRATE_LOW,
+
+        OPTION_VALUE_AUDIO_ON,
+        OPTION_VALUE_AUDIO_OFF,
+
+        STATUS_VALUE_STATE_STARTED,
+        STATUS_VALUE_STATE_STOPPED,
+        STATUS_VALUE_ERROR
+    }
+}