[CODE] refactor medical_cats_condition_fulfilled

[rustykitty]

About The Pull Request

Split conditions.medical_cats_condition_fulfilled into two functions, amount_clanmembers_covered and medicine_cats_condition_fulfilled. Updated usages accordingly.

Why This Is Good For ClanGen

IMO, it's considered bad practice for a function to be able to return two different things based on arguments it is passed, let alone be capable of returning values of two different types.
In fact, the following Java example will not even compile, because boolean is not implicitly convertible to int in Java:

class Test {
    public int test() {
        return true;
    }
}

Linked Issues

N/A

Proof of Testing

Changelog/Credits