chore: add default implementation for IgnoreInTestsTransformer interface (#45)

Java version of [DefaultIgnoreInTestsTransformer](https://github.com/cloudquery/plugin-sdk/blob/main/transformers/struct.go#L41-L45) 


fixes: #33

Author: mnorbury

lib/src/main/java/io/cloudquery/transformers/IgnoreInTestsTransformer.java

@@ -0,0 +1,14 @@
+package io.cloudquery.transformers;
+
+import java.lang.reflect.Field;
+
+public interface IgnoreInTestsTransformer {
+    class DefaultIgnoreInTestsTransformer implements IgnoreInTestsTransformer {
+        @Override
+        public boolean transform(Field field) {
+            return false;
+        }
+    }
+
+    boolean transform(Field field);
+}

lib/src/test/java/io/cloudquery/transformers/IgnoreInTestsTransformerTest.java

@@ -0,0 +1,13 @@
+package io.cloudquery.transformers;
+
+import io.cloudquery.transformers.IgnoreInTestsTransformer.DefaultIgnoreInTestsTransformer;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class IgnoreInTestsTransformerTest {
+    @Test
+    public void shouldRetrunFalse() {
+        assertFalse(new DefaultIgnoreInTestsTransformer().transform(null));
+    }
+}