Curation provider configuration stuff

[sschuberth]

Please have a look at the individual commit messages for the details.

[sschuberth]

@oss-review-toolkit/core-devs it just struck me in the context of this PR that ORT is not using its own curations from ORT config by default. Any concerns / objections to do that?

[codecov]

Codecov Report

Patch coverage: 84.61% and no project coverage change.

Comparison is base (4a1cb6c) 64.29% compared to head (0e229e3) 64.29%.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #7013   +/-   ##
=========================================
  Coverage     64.29%   64.29%           
- Complexity     1969     1970    +1     
=========================================
  Files           331      331           
  Lines         16706    16719   +13     
  Branches       2381     2383    +2     
=========================================
+ Hits          10741    10750    +9     
- Misses         4928     4929    +1     
- Partials       1037     1040    +3     

Flag	Coverage Δ
test	40.17% <84.61%> (+0.05%)	⬆️

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Impacted Files	Coverage Δ
model/src/main/kotlin/config/OrtConfiguration.kt	97.67% <ø> (ø)
advisor/src/main/kotlin/advisors/OssIndex.kt	84.00% <75.00%> (-2.67%)	⬇️
...del/src/main/kotlin/config/AdvisorConfiguration.kt	97.61% <100.00%> (+7.87%)	⬆️
...src/main/kotlin/licenses/LicenseClassifications.kt	96.42% <100.00%> (ø)

... and 1 file with indirect coverage changes

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[sschuberth]

Merging despite the unrelated test failure.