feat(job): add moveToCompleted method [python]

[roggervalf]

Why

1. Why is this change necessary? In order to provide a way to do manual processing. moveToComplete method is not exposed in job instance

How

1. How did you implement this? Add moveToCompleted method in job instance and allow manual processing

Additional Notes (Optional)

Any extra info here.

[Copilot]

Pull Request Overview

This PR introduces a new moveToCompleted method on the Job instance to support manual processing.

• Adds moveToCompleted tests for both JavaScript and Python workers.
• Refactors related functions in the Scripts and Worker modules to simplify moveToCompleted/Failed processing.
• Updates the Job class to expose the new moveToCompleted behavior.

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/test_worker.ts	Adds assertions on attemptsMade and finishedOn for JS tests.
python/tests/worker_test.py	Introduces a test for manual processing and verifies job properties.
python/bullmq/worker.py	Updates moveToCompleted invocation; removes unused opts parameter.
python/bullmq/scripts.py	Refactors moveToCompleted and moveToFailed methods and their args.
python/bullmq/job.py	Implements moveToCompleted to update job status and properties.