expose wakeUp() in api

[andreivips]

Hi, and thanks for great libs !
Bodies falls asleep ( when <Physics allowSleep={true}> ), but after, wont move with applyImpulse/Force without wakeUp.

[marcofugaro]

Hey! Thanks!
Yeah it makes sense to wake up a sleeping body if a force/impulse is applied directly to it.

In the meantime, you have to call body.wakeUp().

[andreivips]

... had to open it in useCannon