perf: Allow event to release sleep

[ChristofferCOASD]

Allow an event to release the sleep. This is useful if a Snake file also has small miscellaneous jobs but still is configured to use a remote executor.

This would fix

snakemake/snakemake-executor-plugin-slurm#252

@johanneskoester would this be somthing that could be merged into master?

Summary by CodeRabbit

• Bug Fixes
  • Shutdown of remote executions is now much more responsive, avoiding long waits during stop/abort.
  • Cancelling or exiting during remote runs completes faster, improving overall UX.
• Refactor
  • Switched waiting logic to an event-driven approach to enable prompt wake-ups on shutdown while preserving existing polling behavior.

[coderabbitai]

📝 Walkthrough

📝 Walkthrough

Pre-merge checks and finishing touches

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	You can run @coderabbitai generate docstrings to improve docstring coverage.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title Check	✅ Passed	The title succinctly conveys that the change introduces an event mechanism to interrupt the sleep, matching the key update in the pull request without extraneous detail.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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