OvrPlatform_Cowatching_SetViewerData Function

Set the current user's viewer data to be shared with copresent users. This can be called when there is an active cowatching session. The data size is limited to 500 characters, and it will eventually become consistent across all users.

void OVRPLATFORM_API OvrPlatform_Cowatching_SetViewerData(UGameInstance *GameInstance, FString ViewerData, OvrPlatform_Cowatching_SetViewerData_Delegate &&Delegate)