This PR adds to jnosql-tinkerpop tests for ArangoDB and TinkerGraph backends.
The same tests are now run against the following matrix of graph providers:

• Neo4j
• ArangoDB
• TinkerGraph

This can be in future further extended with additional tinkerpop graph providers.

In addition, to make this work, the following changes have been made to jnosql-tinkerpop production code:

• The mapping of the ids has been changed to Gremlin id (~id), see org.apache.tinkerpop.gremlin.structure.T#id.
• Updating an entity with null id throws now IllegalArgumentException instead of EmptyResultException.
• Ids and labels are not stored as element properties anymore, i.e. avoiding duplication of persisted fields.
• DefaultTinkerpopGraphDatabaseManager#insert(CommunicationEntity) has been optimized persisting id, label and properties atomically.

The following changes have been made to jnosql-tinkerpop test code:

• changed id types to String
• annotated entities ids with @Id("~id")
• created CDI producers for each target backend
• implemented test matrixes with inner classes for each target backend, e.g.:

    @EnableAutoWeld
    // ...
    abstract class EdgeEntityTest {
  
        @AddPackages(ArangoDBGraphProducer.class)
        static class ArangoDBTest extends EdgeEntityTest {
        }
  
        @AddPackages(Neo4jGraphProducer.class)
        static class Neo4jTest extends EdgeEntityTest {
        }
  
        @AddPackages(TinkerGraphProducer.class)
        static class TinkerGraphTest extends EdgeEntityTest {
        }
  
        @Inject
        private TinkerpopTemplate tinkerpopTemplate;
  
        @Test
        void foo() {
        }
  
        // ...
  
    }