Project architecture and naive solver solution

Set up project architecture interfaces and add a naive implementation
of a solver in DumbBruteSolver

src/test/java/com/cleverthis/interview/SolutionTestBase.java

@@ -13,10 +13,10 @@ public abstract class SolutionTestBase {
     /**
      * Implement your solution in this function.
      * */
-    protected abstract void solve(PadlockImpl padlock);
+    protected abstract void solve(PadlockAdapter padlock);
 
     protected void verify(int numpadSize) {
-        PadlockImpl padlock = new PadlockImpl(numpadSize);
+        PadlockAdapter padlock = new PadlockJavaAdapter(numpadSize);
         solve(padlock);
         assertTrue(padlock.isPasscodeCorrect());
     }