Add NotNullOrEmptyMatcher

[StefH]

No description provided.

[codecov]

Codecov Report

Merging #625 (58119db) into master (9d0682b) will increase coverage by 75.84%.
The diff coverage is 84.05%.

❗ Current head 58119db differs from pull request most recent head 114563e. Consider uploading reports for the commit 114563e to get more accurate results

@@             Coverage Diff             @@
##           master     #625       +/-   ##
===========================================
+ Coverage        0   75.84%   +75.84%     
===========================================
  Files           0      149      +149     
  Lines           0     5734     +5734     
  Branches        0      586      +586     
===========================================
+ Hits            0     4349     +4349     
- Misses          0     1202     +1202     
- Partials        0      183      +183     

Impacted Files	Coverage Δ
src/WireMock.Net/Serialization/MatcherMapper.cs	87.50% <0.00%> (ø)
....Net/Matchers/Request/RequestMessageBodyMatcher.cs	89.13% <66.66%> (ø)
src/WireMock.Net/Matchers/RegexMatcher.cs	86.95% <86.66%> (ø)
src/WireMock.Net/Matchers/NotNullOrEmptyMatcher.cs	88.23% <88.23%> (ø)
src/WireMock.Net/Logging/LogEntry.cs	100.00% <0.00%> (ø)
...et/ResponseProviders/ProxyAsyncResponseProvider.cs	100.00% <0.00%> (ø)
...c/WireMock.Net/Settings/SimpleCommandLineParser.cs	84.21% <0.00%> (ø)
src/WireMock.Net/Util/UrlUtils.cs	100.00% <0.00%> (ø)
src/WireMock.Net/Exceptions/WireMockException.cs	0.00% <0.00%> (ø)
...Mock.Net/ResponseBuilders/Response.WithCallback.cs	100.00% <0.00%> (ø)
... and 143 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9d0682b...114563e. Read the comment docs.