Script function for physical response

[yangfengzzz]

Collision and Trigger will produce events #33 #187 , Script component should have related functions to consume these events.

PR reviewers: @GuoLei1990 , @cptbtptpbcptdtptp , @singlecoder

[yangfengzzz]

In PhysX, PxSceneDesc have some members related to callback function including PxSimulationEventCallback, PxContactModifyCallback, PxCCDContactModifyCallback, PxSimulationFilterCallback, PxBroadPhaseCallback, which contain a lot of onXXX methods like onContact and so on.

Script function is related to collision or collider which will consumer event created by PxScene.

[yangfengzzz]

When the physic scene is updated, the callbacks which are set in SceneDesc which be called and return PxContactPair. In order to be able to convert Physx objects to Typescript objects, we need to set index for PhysX and store them. In PxShape, we can set QueryFilterData, store index in it, and then when the callback returns, we can find the corresponding object based on the indicator.