fix: typecast on conditional

[danglotb]

Hello, TypeCast on CtConditional are not cloned or used in equals. Here an example:

Snippet code:

public class ConditionalRes {
    byte [] b = new byte [] { true ? 1 : 2};
}

Spoon code:

@Test
public void testCloneCastConditional() throws Exception {
    final Launcher launcher = new Launcher();
    launcher.setSourceOutputDirectory("./target/trash");
    launcher.addInputResource("./src/test/resources/spoon/test/visitor/ConditionalRes.java");
    launcher.addProcessor(new AbstractProcessor<CtConditional<?>>() {
        @Override
        public void process(CtConditional<?> conditional) {
            conditional.addTypeCast(getFactory().Type().bytePrimitiveType());
            CtConditional clone = conditional.clone();
            System.out.println(conditional);
            System.out.println(clone);
            System.out.println(conditional.equals(clone));
        }
    });
    launcher.run();
}

Output:

((byte) (true ? 1 : 2))
true ? 1 : 2
true