More "write tests" task cases with more complex logic

[bauersimon]

No description provided.

[bauersimon]

package com.eval;

class TypeArrayAccess {
    static int typeArrayAccess(int[] x) {
        if (x[0] == 123) {
            return x[0];
        }

        return 3;
    }
}

[bauersimon]

Problem with that file and symflower test is that we automatically error in case the maven command exits with 1.

[bauersimon]

@ruiAzevedo19 please take over this PR and extract all the things that can already be merged (i.e. everything except the newly added examples) into an early merger. Nice, pretty commits 🤩 so we can early merge a bunch of stuff. While you are at it please also cherry-pick the refactor+"add service type check" commits from https://github.com/symflower/eval-dev-quality/pull/121/commits.

[bauersimon]

rebased onto #148

[ahumenberger]

Please also go through the examples and align variables names, and other things such that the Go and Java code looks as similar as possible.

[ahumenberger]

I went through the examples once more. Did not review the two other commits yet. Not sure if I have enough context to review them.