move design patterns to new module (#4206)

* move design patterns to new module

* fix logger import

patterns/design-patterns/src/main/java/com/baeldung/proxy/ProxyPatternDriver.java

@@ -0,0 +1,9 @@
+package com.baeldung.proxy;
+
+public class ProxyPatternDriver {
+    public static void main(String[] args) {
+        ExpensiveObject object = new ExpensiveObjectProxy();
+        object.process();
+        object.process();
+    }
+}