Abstract Classical Gate added

Author: Rúben André Barreiro

src/main/java/org/quisl/framework/java/instructions/gates/classical/ClassicalGate.java

@@ -0,0 +1,21 @@
+package org.quisl.framework.java.instructions.gates.classical;
+
+import org.quisl.framework.java.common.ComputingPrefixes;
+import org.quisl.framework.java.instructions.gates.Gate;
+
+public class ClassicalGate extends Gate {
+
+    public ClassicalGate(Integer numInputs, Integer numOutputs, String gateName) {
+
+        super(numInputs, numOutputs, ComputingPrefixes.CLASSICAL_PREFIX.getComputingPrefix(), gateName);
+
+    }
+
+    @Override
+    public void applyGate() {
+
+        // Empty Method
+
+    }
+
+}