[Edge] adds a full login form to edge

[chpoulter]

I've added a full login form for edge, so it gets possible to login with user and password.

The changes in AuthenticationRequestHandler make it possible to add an own UserService with a higher service ranking for handling authentication requests. The code should be transparent, so everything should work as before, if you do not add an own UserService.

In the UI I added a setting for the login form type - with fullLogin you can decide, if you want a username+password login or just a password login as before. Only password is also the default.

I've written this code as I only run an edge and no backend and I can attach it to ldap this way. But of course you could use/write other UserService implementations for adapting different authentication systems.

The patch is a diff against main and I will keep it in sync to main.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

❌ Your patch check has failed because the patch coverage (0.00%) is below the target coverage (75.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #3958      +/-   ##
=============================================
- Coverage      55.72%   55.34%   -0.38%     
- Complexity     19111    19439     +328     
=============================================
  Files           3674     3842     +168     
  Lines         171940   177253    +5313     
  Branches       14153    14802     +649     
=============================================
+ Hits           95802    98082    +2280     
- Misses         72367    75289    +2922     
- Partials        3771     3882     +111     

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