[feature] Add numeric assertions for numerical comparisons

[beluamat29]

Is your feature request related to a problem? Please describe.

Even though numerical comparisons can be achieved using boolean assertions (like assert.isTrue(3 < 4)) I think is more semantically correct to have numerical assertions to compare numbers that don't involve boolean assertions i.e isLessThan, isGreaterThan, etc.

Describe the solution you'd like

I'd be great if we can add assertions for the cases greater than, greater or equal than, less than and less or equal than