The following math commands are being moved to nu-cmd-extra
* cos
* cosh
* egamma
* phi
* pi
* sin
* sinh
* tan
* tanh
* tau
For now I think we have most of the obvious commands moved over based on
@sholderbach this should cover moving the "high school" commands..
>>Yeah I think this rough separation into "high school" math in extra
and "middle school"/"programmer" math in the core makes a ton of sense.
And to reference the @fdncred list from
https://github.com/nushell/nushell/pull/9647#issuecomment-1629498812
