feat: support http basic auth

[jimirocks]

Resolves #26

[codecov]

Codecov Report

Attention: Patch coverage is 78.94737% with 4 lines in your changes missing coverage. Please review.

Project coverage is 75.98%. Comparing base (efbdaa9) to head (3b03af3).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
src/commonMain/kotlin/ktor/KtorHttpLoxoneClient.kt	70.00%	2 Missing and 1 partial ⚠️
src/commonMain/kotlin/LoxoneAuth.kt	88.88%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #29      +/-   ##
==========================================
+ Coverage   75.50%   75.98%   +0.47%     
==========================================
  Files          26       27       +1     
  Lines         396      408      +12     
  Branches       77       80       +3     
==========================================
+ Hits          299      310      +11     
  Misses         46       46              
- Partials       51       52       +1     

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