Adds extendable timeouts

[chrisguidry]

Closes #87

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (4801d61) to head (062de03).

Additional details and impacted files

@@            Coverage Diff             @@
##              main      #101    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files           26        26            
  Lines         2719      2824   +105     
  Branches       154       160     +6     
==========================================
+ Hits          2719      2824   +105     

Flag	Coverage Δ
python-3.12	100.00% <100.00%> (ø)
python-3.13	100.00% <100.00%> (ø)

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Files with missing lines	Coverage Δ
src/docket/__init__.py	100.00% <ø> (ø)
src/docket/dependencies.py	100.00% <100.00%> (ø)
src/docket/worker.py	100.00% <100.00%> (ø)
tests/conftest.py	100.00% <ø> (ø)
tests/test_fundamentals.py	100.00% <100.00%> (ø)
tests/test_worker.py	100.00% <ø> (ø)

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