HBRequest as a struct

[adam-fowler]

HBRequest being a struct affects Auth package considerably.
As Auth changes the request ie caching logged in entities on the request it cannot do this via a separate object anymore.
This means the auth apis are now at the the HBRequest level and some are mutating (login/logout).

HBRequest.auth.login is now HBRequest.authLogin
HBRequest.auth.logout is now HBRequest.authLogout

I have replicated this change across all the Auth apis

[codecov]

Codecov Report

Merging #10 (d313176) into main (34e98d0) will decrease coverage by 0.90%.
The diff coverage is 76.92%.

@@            Coverage Diff             @@
##             main      #10      +/-   ##
==========================================
- Coverage   84.43%   83.52%   -0.91%     
==========================================
  Files           7        7              
  Lines         167      170       +3     
==========================================
+ Hits          141      142       +1     
- Misses         26       28       +2     

Impacted Files	Coverage Δ
...s/HummingbirdAuth/Authenticator/Request+Auth.swift	70.00% <70.00%> (-7.78%)	⬇️
.../HummingbirdAuth/Authenticator/Authenticator.swift	100.00% <100.00%> (ø)
Sources/HummingbirdAuth/BasicAuthentication.swift	100.00% <100.00%> (ø)
Sources/HummingbirdAuth/BearerAuthentication.swift	100.00% <100.00%> (ø)

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