Add additional optional nodes

[MrHash]

Considering

• RGB node
• Electrs
• Libbitcoin
• Nakamoto
• OpenTimestamps
• ION

[chris-aeviator]

it might be more useful to add a script that adds/ removes containers via an orchestrator than to further pre-define them inside the compose file.

[MrHash]

Yeh would be good, orchestration is on the to-do list but it's not trivial (afaict)