Add LinqMatcher

[StefH]

No description provided.

[codecov]

Codecov Report

Merging #195 into master will increase coverage by 0.27%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #195      +/-   ##
==========================================
+ Coverage   72.57%   72.84%   +0.27%     
==========================================
  Files          89       90       +1     
  Lines        3252     3277      +25     
  Branches      422      419       -3     
==========================================
+ Hits         2360     2387      +27     
+ Misses        725      724       -1     
+ Partials      167      166       -1

Impacted Files	Coverage Δ
src/WireMock.Net/Serialization/MatcherMapper.cs	80.43% <100%> (+2.65%)	⬆️
src/WireMock.Net/Matchers/LinqMatcher.cs	100% <100%> (ø)
src/WireMock.Net/Server/FluentMockServer.Admin.cs	53.11% <0%> (+0.18%)	⬆️

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