[FEAT] Retry job for an open batch

[Augustinio]

Description

• Added retry method to Batch model.
• Added unit tests
• Added documentation

Remaining Tasks

• e2es

Checklist

• [x] The title of the PR follows the right format: [{Label}] {Short Message}. Label examples: IMPROVEMENT, FIX, REFACTORING... Short message is about what your PR changes.

Versioning (PASQAL developers only)

• [x] Update the version of pasqal-cloud in _version.py following the changes in your PR and by using semantic versioning.

Documentation

• [x] Update CHANGELOG.md with a description explaining briefly the changes to the users.

Tests

• [x] Unit tests have been added or adjusted.
• [x] Tests were run locally.

Internal tests pipeline (PASQAL developers only)

• [ ] Update and run the internal tests while targeting the branch of this PR. If your PR hasn't changed any functionality, it still needs to be validated against internal tests.

After updating the version (PASQAL developers only)

• [ ] Open a PR on the internal tests that updates the version used for the pasqal-cloud backward compatibility tests.

[Augustinio]

Functionality and code looks good.

I'm wondering if adding this as a Batch method is the best way to go about it though. Intuitively I would ave seen it as either a method on the SDK class (retry_job(job_id)) or on the job class retry(). Was there any reason to add it to the batch class?

I didn't go for the job class because we don't have access to the batch or sdk instance from the job instance. Hence we can't update the batches' ordered jobs from there. Going from the sdk would require to pass the batch as an argument anyway. Since this method makes use of the add_jobs method already used in batch I thought it simplest to have it there.