feat(connector-corda): add JSON classname->JVM class object deserialize

1. This allows the API clients to specify a class name from which the backend
will retrieve the JVM Class<?> object.
2. It is very simple under the hood it just uses `Class.forName(x)`
3. It is needed to be able to do this because when passing in flow parameters
sometimes the arguments are Class<?> objects and so this was a feature gap.

Signed-off-by: Peter Somogyvari <peter.somogyvari@accenture.com>

packages/cactus-plugin-ledger-connector-corda/src/main-server/kotlin/gen/kotlin-spring/src/main/kotlin/org/hyperledger/cactus/plugin/ledger/connector/corda/server/impl/JsonJvmObjectDeserializer.kt

@@ -74,6 +74,10 @@ class JsonJvmObjectDeserializer(
                 val constructorArgs: Array<Any?> = jvmObject.jvmCtorArgs.map { x -> instantiate(x) }.toTypedArray()
 
                 when {
+                    Class::class.java.isAssignableFrom(clazz) -> {
+                        val x = constructorArgs.map { ca -> ca as String }.first()
+                        return Class.forName(x)
+                    }
                     DoubleArray::class.java.isAssignableFrom(clazz) -> {
                         return constructorArgs
                             .map { ca -> ca as Double }

packages/cactus-plugin-ledger-connector-corda/src/main-server/kotlin/gen/kotlin-spring/src/test/kotlin/org/hyperledger/cactus/plugin/ledger/connector/corda/server/impl/JsonJvmObjectDeserializerTest.kt

@@ -9,12 +9,35 @@ enum class Direction {
     NORTH, SOUTH, WEST, EAST
 }
 
+class TestTxData {}
 class JsonJvmObjectDeserializerTest {
 
     companion object {
         val deserializer = JsonJvmObjectDeserializer()
     }
 
+
+    @Test
+    fun classForNameHappyPath() {
+
+        val jvmObject = JvmObject(
+            jvmTypeKind = JvmTypeKind.REFERENCE,
+            jvmType = JvmType(
+                fqClassName = Class::class.java.name
+            ),
+            jvmCtorArgs = listOf(
+                JvmObject(
+                    jvmTypeKind = JvmTypeKind.PRIMITIVE,
+                    jvmType = JvmType(String::class.java.name),
+                    primitiveValue = TestTxData::class.java.name
+                )
+            )
+        )
+
+        val deserializedObject = deserializer.instantiate(jvmObject)
+
+        assert(deserializedObject == TestTxData::class.java)
+    }
     @Test
     fun enumHappyPath() {
         val actual = Direction.WEST