REFAC: Clear rates CDDebugObject

Provides a clear rate for CollisionDataDebugObject so debugging of multiple frames can be done. Useful when you're dealing with a high framerate with contacts. IE: Contacts just instantly disappear if not sustained. Alternative solution would be to write them out or stop the simulation upon contact or whatever other time/instant of the simulation you needed to debug. This can show you multiple frames of contacts at once (ie: last 100 contacts). We could also eventually implement a queue.