Add WireMock.org RestClient

[StefH]

No description provided.

[codecov]

Codecov Report

Merging #631 (c30100b) into master (fd28ebd) will decrease coverage by 1.00%.
The diff coverage is 61.17%.

@@            Coverage Diff             @@
##           master     #631      +/-   ##
==========================================
- Coverage   75.56%   74.55%   -1.01%     
==========================================
  Files         124      139      +15     
  Lines        5586     5848     +262     
  Branches      585      621      +36     
==========================================
+ Hits         4221     4360     +139     
- Misses       1183     1290     +107     
- Partials      182      198      +16     

Impacted Files	Coverage Δ
.../WireMock.Org.Abstractions/BasicAuthCredentials.cs	0.00% <0.00%> (ø)
...eMock.Org.Abstractions/GetAdminMappingsResponse.cs	0.00% <0.00%> (ø)
...g.Abstractions/GetAdminRecordingsStatusResponse.cs	0.00% <0.00%> (ø)
...ons/GetAdminRequestsUnmatchedNearMissesResponse.cs	0.00% <0.00%> (ø)
...Mock.Org.Abstractions/GetAdminScenariosResponse.cs	0.00% <0.00%> (ø)
src/WireMock.Org.Abstractions/Meta.cs	0.00% <0.00%> (ø)
src/WireMock.Org.Abstractions/NearMiss.cs	0.00% <0.00%> (ø)
...Org.Abstractions/PostAdminRequestsCountResponse.cs	0.00% <0.00%> (ø)
src/WireMock.Org.Abstractions/ResponseLogNormal.cs	0.00% <0.00%> (ø)
...rg.Abstractions/ResponseLogUniformlyDistributed.cs	0.00% <0.00%> (ø)
... and 22 more

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