Add funcs for local position/angles and add Entity:setLightingOriginEntity

[Advers]

Adds a few new ent and hologram functions for setting and getting local transformations, tends to be significantly faster than doing Entity:setPos(Parent:localToWorld()) and has very little precision loss by comparison

Also adds Entity:setLightingOriginEntity which can be useful as a sv function to stop some models from becoming black due to their lighting origins slipping underground

[Advers]

Right now setLocalPos doesn't use SF.clampPos because it seemed like trying to use an invalid/too large vector simply did not do anything. If there is some sort of problem, it can be added

[Advers]

There is also no check for if the entity has a parent since SetLocalPos and Angles will just act like their world coordinate counterparts when there isn't