Convert switch cases where every case returns into a returned switch expression

[timtebeek]

Similar to

• Convert assigning Switch statements to Switch expressions #795
• Convert switch expressions with colon to arrows #799

Describe the situation before applying the recipe

class B {
    String doFormat(String str) {
        switch (str) {
            case "foo": return "Foo";
            case "bar": return "Bar";
            case null, default: return "Other";
        }
    }
}

Describe the situation after applying the recipe

class B {
    String doFormat(String str) {
        return switch (str) {
            case "foo" -> "Foo";
            case "bar" -> "Bar";
            case null, default -> "Other";
        };
    }
}

Any additional context

Ideally again starting only with switches where every case is a direct return, and only later expanding to cover additional usages.