feat(auth): enable multiple auth methods

[jescalada]

This PR enables multiple auth methods and sets the groundwork for adding a JWTStrategy to passport, as mentioned in #1, so we can have an extra security layer for the API.

I opened this PR to keep track of my work. I'll most likely end up closing and reopening it in the Finos repo. Sorry about that!

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 59.52381% with 34 lines in your changes missing coverage. Please review.

Please upload report for BASE (main@585cda6). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
src/service/passport/activeDirectory.js	15.38%	22 Missing ⚠️
src/service/passport/local.js	80.76%	5 Missing ⚠️
src/service/passport/oidc.js	33.33%	4 Missing ⚠️
src/service/routes/auth.js	66.66%	2 Missing ⚠️
src/config/index.js	85.71%	1 Missing ⚠️

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Additional details and impacted files

@@           Coverage Diff           @@
##             main      #24   +/-   ##
=======================================
  Coverage        ?   62.34%           
=======================================
  Files           ?       50           
  Lines           ?     1819           
  Branches        ?        0           
=======================================
  Hits            ?     1134           
  Misses          ?      685           
  Partials        ?        0           

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