Move editor dataset mappings to DB

[andresgutgon]

What?

Now we persist dataset mapping of a prompt in Latitude Editor in local storage.

We want to persist this mapping in DB. this way is shared between all the users in the workspace

TODO

• Move dataset mapping to the database as a JSONB in the document version table
• Run in batch from editor does not persist the mapping 🐛
• Run in batch from evaluation does not persist the mapping 🐛

Run in batch from the editor

Run in batch from evaluation

[andresgutgon]

PR: #734