Feature Request: Diagram Direction Control eg. Circular for Peer-to-Peer token ring and consensus technologies like Cassandra, Elasticsearch, Etc and ZooKeeper

[HariSekhon]

Several technologies such as Cassandra, Elasticsearch, Etcd and ZooKeeper operate either token ring data splits or all-way consensus protocols and should be drawn as circular peer-to-peer ring technologies.

Right now I can't do this due to the lack of placement control (issue ##1285) and in this case diagram direction.

For example the following 3 diagrams in my Diagrams-as-Code repo should actually be rings for each of the main technologies:

The ZooKeeper one should actually be 5 nodes for High Availability during maintenance but I cannot draw it even close to circular if I add the other two nodes:

[alixander]

related: #1578