Complete API Key support implementation

[sgayangi]

Purpose

This PR adds the required field for API Key and supports the optionality of the authenticators similar to the APIM implementation.
Testing was done in CP to DP mode with an API Key generated from the APIM side.

Fixes #2399

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 19.91%. Comparing base (707328a) to head (0d03540).
Report is 91 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2402      +/-   ##
==========================================
- Coverage   26.08%   19.91%   -6.18%     
==========================================
  Files          68      229     +161     
  Lines        4769    26206   +21437     
  Branches     2451     2723     +272     
==========================================
+ Hits         1244     5218    +3974     
- Misses       3525    20800   +17275     
- Partials        0      188     +188     

Flag	Coverage Δ
adapter	20.44% <ø> (?)
common-controller	1.97% <ø> (?)
config-deployer-service	26.78% <ø> (+0.70%)	⬆️
idp-domain-service	80.21% <ø> (?)

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