Implement Sort range

[cincodenada]

Implements the sortRange() method.

I implemented a shorthand for the sortSpecs, but that can be changed if needed.

Also, I should probably add docs about this somewhere.

[crushton-qg]

Hi, I'm trying to implement a sort entire sheet by column function, @cincodenada did you make any further progress on this?

[crushton-qg]

@cincodenada @theoephraim please ignore previous comment, I have solved it haha