Stdlib: Reintroduce `gamma`, `factorial` functions

[spotandjake]

Currently our trig functions in the module library such as Number.sin, Number.cos and Number.tan have some issues. That we should correct, we should make an attempt either fully improve the implementation for a more accurate function or create fast paths for special angles that would allow for more accuracy. Another current problem is with how we map values into the a -pi and pi range. as we dont have arbitrary precision floats we lose accuracy which makes the trig functions almost useless with bigints.

Edit Note: The original issue misidentified the problem we were running into, Upon furthur investigation there seems to be some other issues, so I hijacked this issue for that.

[phated]

I updated the title since we're removing these in #2046 until the correct fix is made.