fix: forward errors that happened in side-effects from threads to consumers

[jstarpl]

Errors that happened in a side-effect (like setTimeout or setImmediate) were not forwarded to consumers.
Also, allow users to specify a custom timeout for restarts and kills, to allow handling cases where the thread might take a bit of time to shut down.

[codecov-commenter]

Codecov Report

Merging #68 (9be3413) into master (cd379f1) will decrease coverage by 0.31%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master      #68      +/-   ##
==========================================
- Coverage   75.00%   74.68%   -0.32%     
==========================================
  Files          14       14              
  Lines        1088     1110      +22     
  Branches      251      262      +11     
==========================================
+ Hits          816      829      +13     
- Misses        270      279       +9     
  Partials        2        2              

Impacted Files	Coverage Δ
src/child-process/worker.ts	74.76% <0.00%> (-1.07%)	⬇️
src/parent-process/workerPlatform/webWorkers.ts	11.11% <0.00%> (ø)
src/parent-process/manager.ts	78.07% <54.05%> (-0.62%)	⬇️
src/parent-process/workerPlatform/workerThreads.ts	80.00% <66.66%> (+1.05%)	⬆️
src/parent-process/threadedClass.ts	90.44% <100.00%> (ø)
src/shared/sharedApi.ts	95.18% <100.00%> (+0.11%)	⬆️

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