UML-3076 Factory to provide JWK for OIDC flow

[MishNajam]

Purpose

Factory class that returns a configured JWK using jwt-signature-algorithm-ecdsa library createFromKey method. May need further configuration in UML-3056 potentially.

Fixes UML-3076

Checklist

• I have performed a self-review of my own code

• I have added relevant logging with appropriate levels to my code
• New event_codes have been documented on the wiki page
• I have updated documentation (Confluence/GitHub wiki/tech debt doc) where relevant

• I have added tests to prove my work

• I have added welsh translation tags and updated translation files
• I have run an accessibility tool on any pages I have made changes to and fixed any issues found
• I have notified the Interaction Designer of any content changes so that appropriate screenshots/flow diagram changes can be made
• The product team have tested these changes

[codecov]

Codecov Report

Merging #2353 (b75a2db) into main (a7bb3ae) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main    #2353      +/-   ##
============================================
+ Coverage     91.95%   91.96%   +0.01%     
- Complexity     1453     1455       +2     
============================================
  Files           273      274       +1     
  Lines          6586     6597      +11     
============================================
+ Hits           6056     6067      +11     
  Misses          513      513              
  Partials         17       17              

Flag	Coverage Δ
use-an-lpa-admin	88.81% <ø> (ø)
use-an-lpa-api	96.77% <100.00%> (+0.02%)	⬆️
use-an-lpa-front	89.19% <ø> (ø)

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

Files	Coverage Δ
.../src/App/src/Service/Authentication/JWKFactory.php	100.00% <100.00%> (ø)