feat: introduce ancla's auth interface

[denopink]

• once refactor: move argus client code to ancla #271 is merged, chrysom/acquire will replace bascule
• chrysom/acquire will allow the user to provide there own auth implementation instead of ancla relying on bascule
• chrysom/acquire will be integrated once refactor: move argus client code to ancla #271 is merged

[denopink]

will introduce the auth interface in a later pr

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.58%. Comparing base (35dae74) to head (469d991).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #272   +/-   ##
=======================================
  Coverage   82.58%   82.58%           
=======================================
  Files          18       18           
  Lines         890      890           
=======================================
  Hits          735      735           
  Misses        130      130           
  Partials       25       25           

Flag	Coverage Δ
unittests	82.58% <ø> (ø)

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