Support running WireMock.Net as a sub-app in IIS

[StefH]

No description provided.

[codecov]

Codecov Report

Merging #164 into master will increase coverage by 0.38%.
The diff coverage is 98.11%.

@@            Coverage Diff             @@
##           master     #164      +/-   ##
==========================================
+ Coverage   69.39%   69.78%   +0.38%     
==========================================
  Files          83       85       +2     
  Lines        3029     3068      +39     
  Branches      413      417       +4     
==========================================
+ Hits         2102     2141      +39     
  Misses        753      753              
  Partials      174      174

Impacted Files	Coverage Δ
src/WireMock.Net/Server/FluentMockServer.cs	50% <0%> (-0.41%)	⬇️
src/WireMock.Net/Models/UrlDetails.cs	100% <100%> (ø)
src/WireMock.Net/Admin/Requests/LogRequestModel.cs	100% <100%> (ø)	⬆️
src/WireMock.Net/Util/UrlUtils.cs	100% <100%> (ø)
src/WireMock.Net/Owin/OwinRequestMapper.cs	96.87% <100%> (ø)	⬆️
src/WireMock.Net/RequestMessage.cs	97.53% <100%> (+0.19%)	⬆️
src/WireMock.Net/Serialization/LogEntryMapper.cs	100% <100%> (ø)	⬆️

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[StefH]

@DavidKorn - Can you review and approve so that this PR can me merged to main.

[DavidKorn]

Looks good. Read through these changes, and we've already been using this preview version. Thanks.