General configuration link button

[robinmolen]

Closes #49

Add djangoUrls to the AdminSettingsContext and add the GeneralConfigurationButton component.

The GeneralConfigurationButton component implements a HTML Anchor element, using the djangoUrls.generalConfiguration url as target.

The djangoUrls dict will contain any urls that are defined by implementing Django application. We assume that these urls will be created using the python reverse function, to ensure that the urls are and remain correct.

[codecov]

Codecov Report

❌ Patch coverage is 83.33333% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 78.20%. Comparing base (f5e1ec5) to head (7a5977b).

Files with missing lines	Patch %	Lines
src/AdminUI.tsx	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #50      +/-   ##
==========================================
- Coverage   78.59%   78.20%   -0.40%     
==========================================
  Files          37       38       +1     
  Lines         285      289       +4     
  Branches       51       51              
==========================================
+ Hits          224      226       +2     
- Misses         55       57       +2     
  Partials        6        6              

Flag	Coverage Δ
storybook	71.62% <83.33%> (+0.39%)	⬆️
vitest	46.40% <20.00%> (-1.24%)	⬇️

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[robinmolen]

The login url should also be provided through the djangoUrls #40. Might as well fix that now