Add `gt` and `gte` for consistency to `Logic`

[mkorbel1]

Motivation

For equality, less than, and less than or equal to, Logic has eq, lt, and lte, respectively, since those operators have different meanings (object equality, conditional assignment, and assignment, respectively). Since greater than and greater than or equal to do not use those operators for something else, they were overloaded for > and >=. However, this is a little inconsistent and confusing to new users. It would be nice if you could also optionally use gt and gte for consistency.

Desired solution

Add gt and gte implementations to Logic. Do not remove > and >= overloaded operators.

[IdiBetzSch]

Hey.

Picked this one up while familiarizing myself with Dart. Seems like I have it done(wasn't much to it), but running myself through the test and such getting a feel for the setup right now.

[Sanchit-kumar]

Picking this one up.