PR-40: Add dynamic filters

[PRodriguezFlores]

• Model now supports all valid Druid filters, expanding beyond previous sensor-only filtering.
• Each model accompanied by three files: {model_name}.keras (TensorFlow model), {model_name}.ini (configuration), and {model_name}_filter.json (filter for prediction and training).
• Streamlined imports using project's base directory for all inner submodules.
• Significantly improved test coverage across the repository.

[the-label-bot]

The Label Bot has predicted the following:

Category	Value	Confidence	Applied Label
Kind	feature	0.873	✔️
Size	XL	0.822	✔️

[codecov]

Codecov Report

Attention: 32 lines in your changes are missing coverage. Please review.

Comparison is base (3c5e463) 77.67% compared to head (d6361bb) 82.58%.

Files	Patch %	Lines
resources/src/redborder/async_jobs/train_job.py	40.47%	25 Missing ⚠️
resources/src/__main__.py	0.00%	6 Missing ⚠️
resources/src/redborder/rq.py	83.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #44      +/-   ##
==========================================
+ Coverage   77.67%   82.58%   +4.90%     
==========================================
  Files          13       13              
  Lines         663      735      +72     
==========================================
+ Hits          515      607      +92     
+ Misses        148      128      -20     

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