feat: CompactMealy clone constructor (#50)

* feat: CompactMealy clone constructor

* chore: CI

* fix: protected constructor

Author: tiferrei

core/src/main/java/net/automatalib/automata/transducers/impl/compact/CompactMealy.java

@@ -52,6 +52,18 @@ public CompactMealy(Alphabet<I> alphabet) {
         this(alphabet, DEFAULT_INIT_CAPACITY, DEFAULT_RESIZE_FACTOR);
     }
 
+    public CompactMealy(CompactMealy<I, O> other) {
+        super(other.getInputAlphabet(), other);
+        this.transitions = other.transitions.clone();
+        this.outputs = other.outputs.clone();
+    }
+
+    protected CompactMealy(Alphabet<I> alphabet, CompactMealy<I, O> other) {
+        super(alphabet, other);
+        this.transitions = other.transitions.clone();
+        this.outputs = other.outputs.clone();
+    }
+
     @Override
     protected void updateTransitionStorage(Payload payload) {
         this.transitions = updateTransitionStorage(this.transitions, AbstractCompact.INVALID_STATE, payload);