Adding gold units and functionality

[JackUrb]

Overview

Based on the internal demo we ran today, I needed to make a few changes for gold units to work with our default setups out-of-box. This PR adds this, alongside a fix for unbounded gold launches (that we already had for validation).

Implementation

• Screening and Validation units are both now part of StaticBlueprint and RemoteBlueprint. These are mutually exclusive and warn when trying to use both
• Gold units now set max_gold_units, which is the maximum number to be launched for a specific job. This follows through to get_gold_unit_data_for_worker which will stop returning golds if they are no longer available, and should_produce_gold_for_worker which will no longer request golds for already-approved workers when golds are no longer available.

Testing

Automated tests
Running during the demo today

[codecov-commenter]

Codecov Report

Base: 64.26% // Head: 64.16% // Decreases project coverage by -0.10% ⚠️

Coverage data is based on head (aeb1635) compared to base (66be164).
Patch coverage: 38.88% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #923      +/-   ##
==========================================
- Coverage   64.26%   64.16%   -0.11%     
==========================================
  Files         108      108              
  Lines        9405     9420      +15     
==========================================
  Hits         6044     6044              
- Misses       3361     3376      +15     

Impacted Files	Coverage Δ
mephisto/operations/client_io_handler.py	83.85% <ø> (ø)
...to/abstractions/blueprints/mixins/use_gold_unit.py	29.55% <8.33%> (-1.74%)	⬇️
...lueprints/abstract/static_task/static_blueprint.py	42.10% <100.00%> (+0.61%)	⬆️
...ractions/blueprints/mixins/screen_task_required.py	74.74% <100.00%> (+0.25%)	⬆️
...nts/remote_procedure/remote_procedure_blueprint.py	43.29% <100.00%> (+0.59%)	⬆️
mephisto/abstractions/architects/mock_architect.py	88.23% <0.00%> (-2.62%)	⬇️

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