add with_all function to model

[AlpMimaroglu]

Adds the with_all function to the model. It is a convenience function for code organization in the case where people organize their code to have functions that return a list of constraints so that they can be added to the model in the regular builder function style instead of having to add them via

for constaint in constraints {
    model = model.with(constraint)
}

which breaks the builder pattern flow.
Did not know where to put a unit test for the function or even if one is necessary. As long as add_constraint() works it should work as well but if a correct place for one is suggested I don't mind adding one.

[AlpMimaroglu]

changed the floating point comparison to not check strict equality because clarabel was failing

[AlpMimaroglu]

Rust f64::EPSILON value was still too small for the difference clarabel causes so added a 1e-10 epsilon value to check floating point difference. This value should be big enough to not cause any flaky tests or issues