Feat: Add all_burst_number

[arnaudon]

Description

See docstring for details, WIP for work with @PolinaL

I'll add test/doc/changelog once stable

Checklist:

• [ ] Unit tests are added to cover the changes (skip if not applicable).
• [ ] The changes are mentioned in the documentation (skip if not applicable).
• [ ] CHANGELOG file is updated (skip if not applicable).