NLogLogger refactoring to reduce code-path-navigations

[snakefoot]

No description provided.

[codecov-commenter]

Codecov Report

Merging #539 (2e8dd2d) into master (e006c89) will increase coverage by 0.27%.
The diff coverage is 81.60%.

@@            Coverage Diff             @@
##           master     #539      +/-   ##
==========================================
+ Coverage   80.66%   80.93%   +0.27%     
==========================================
  Files          17       17              
  Lines        1438     1427      -11     
  Branches      237      231       -6     
==========================================
- Hits         1160     1155       -5     
+ Misses        171      164       -7     
- Partials      107      108       +1     

Impacted Files	Coverage Δ
...tensions.Logging/Extensions/ConfigureExtensions.cs	57.98% <0.00%> (ø)
...og.Extensions.Logging/Logging/NLogLoggerFactory.cs	85.29% <ø> (ø)
.../LayoutRenderers/MicrosoftConsoleLayoutRenderer.cs	73.46% <75.00%> (ø)
src/NLog.Extensions.Logging/Logging/NLogLogger.cs	82.20% <82.71%> (+1.38%)	⬆️
...nsions.Logging/Logging/NLogMessageParameterList.cs	91.30% <100.00%> (ø)

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