Refactor Testkit-backend to use jackson for databinding

The objective of this commit is to support the current enabled tests on the Java Testkit Suite in more extensible and maintainable structure.

The commands were separated in different objects which are mapped by Jackson and ran by the CommandProcessor. Jackson is also responsible for serializing the response using custom serializers to map values and records to CypherValues, structure used by teskit to return the values with the type information.

Author: gjmwoods

testkit-backend/pom.xml

@@ -32,6 +32,24 @@
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.12</version>
+            <scope>provided</scope>
+        </dependency>
+
+        <!-- Test Dependencies -->
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>
@@ -49,7 +67,7 @@
                         <configuration>
                             <transformers>
                                 <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
-                                    <mainClass>Runner</mainClass>
+                                    <mainClass>neo4j.org.testkit.backend.Runner</mainClass>
                                 </transformer>
                             </transformers>
                             <finalName>testkit-backend</finalName>