Manage Video Player Action

Description: a WIP custom action to control the new Video Player Unity Component. It can Play/Stop or change the settings of a video player. Should be able to modify most settings at runtime (untested though), the only settings not in yet are settings related to the Material Override Render mode (will add them later). Also, NewCamera and RenderTexture fields don't currently use constantIDs right now (so they will be lost if the camera or Render texture is deleted from the scene).

To use this custom action you have to create a new text file and rename it ActionManageVideoPlayer.cs then add it to your custom actions folder (which can be setup in the Action manager) or you can drop it in the Actions folder under Adventure Creator/Scripts/Actions.