feat: add labels to the maestro scheduler

[reinaldooli]

What does this PR do?

• Allow labels to be defined in the scheduler, and then apply those labels to the kubernetes pods created.

[codecov-commenter]

Codecov Report

Attention: 4 lines in your changes are missing coverage. Please review.

Comparison is base (5164101) 83.03% compared to head (a651e90) 82.99%.

Files	Patch %	Lines
...nternal/api/handlers/requestadapters/schedulers.go	60.00%	1 Missing and 1 partial ⚠️
.../core/services/schedulers/patch/patch_scheduler.go	33.33%	1 Missing and 1 partial ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #603      +/-   ##
==========================================
- Coverage   83.03%   82.99%   -0.04%     
==========================================
  Files          85       85              
  Lines        5583     5594      +11     
==========================================
+ Hits         4636     4643       +7     
- Misses        763      765       +2     
- Partials      184      186       +2     

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