Add WatchFilePattern

[AnandInguva]

WatchFilePattern Ptransform.

Completes Part 2 of #24042

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[codecov]

Codecov Report

Merging #25393 (f97fca2) into master (9b77bf9) will decrease coverage by 0.07%.
The diff coverage is 32.72%.

@@            Coverage Diff             @@
##           master   #25393      +/-   ##
==========================================
- Coverage   72.87%   72.81%   -0.07%     
==========================================
  Files         750      751       +1     
  Lines       99471    99611     +140     
==========================================
+ Hits        72494    72534      +40     
- Misses      25608    25708     +100     
  Partials     1369     1369              

Flag	Coverage Δ
python	82.17% <32.72%> (-0.11%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...e/pytorch_image_classification_with_side_inputs.py	0.00% <0.00%> (ø)
sdks/python/apache_beam/ml/inference/utils.py	92.15% <89.74%> (-7.85%)	⬇️
sdks/python/apache_beam/io/fileio.py	96.11% <100.00%> (+0.01%)	⬆️
...python/apache_beam/runners/worker/worker_status.py	74.66% <0.00%> (-0.67%)	⬇️
...eam/runners/interactive/interactive_environment.py	91.71% <0.00%> (-0.31%)	⬇️
...ks/python/apache_beam/runners/worker/sdk_worker.py	89.24% <0.00%> (ø)
...thon/apache_beam/ml/inference/pytorch_inference.py	0.00% <0.00%> (ø)
...hon/apache_beam/runners/worker/bundle_processor.py	93.86% <0.00%> (+0.12%)	⬆️
...on/apache_beam/runners/dataflow/dataflow_runner.py	81.88% <0.00%> (+0.14%)	⬆️
...eam/runners/portability/fn_api_runner/execution.py	93.13% <0.00%> (+0.63%)	⬆️

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[AnandInguva]

Run PythonLint PreCommit

[AnandInguva]

R : @damccorm

[damccorm]

This looks great - had some comments, but they're all minor or total nits. Thanks!

[damccorm]

This is awesome, just 2 lines and an additional arg to RunInference to do this!

[AnandInguva]

TODO to myself: Change the typo after #25399 is merged

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[damccorm]

TODO to myself: Change the typo after #25399 is merged

Merged - sorry for the delay, had to retry some precommit checks

[AnandInguva]

Run PythonDocs PreCommit

[AnandInguva]

Run Whitespace PreCommit

[AnandInguva]

I addressed almost all comments. PTAL @damccorm . Thanks for the suggestions

[damccorm]

Just one last small typo