Support merging

[nustiueudinastea]

What would you like to be added or enhanced

Support merging between different immudb databases, similarly to https://github.com/attic-labs/noms and https://github.com/dolthub/dolt

Why is this needed

Git like merging + cryptographic proofs would make immudb an ideal solution for systems that:

• need to support offline or low availability use cases
• implement collaborative features
• can't rely on a central server

Additional context

[dwymark]

Also similar in concept to automerge (there is a talk about the project here).

[jeroiraz]

thanks for proposing this idea. It's certainly a huge topic, with multiple approaches with different tradeoffs...

happy to have discussions around this