Instrumented code to measure execution time of the various layers

[bart-degreed]

This PR instruments the various layers of code in the library and the example project. It enables identification of code paths worth considering for optimization.

Fixes #1032.

Example output:

JsonApiDotNetCoreExample.Startups.Startup: Information: Measurement results for application startup:
Configure other (startup) .........  0:00:00:00.0018732 ...   0.17%
  Configure JSON:API (startup) ....  0:00:00:01.0907241 ...  99.83%
Initialize other (startup) ........  0:00:00:00.5180028 ...  98.60%
  Initialize JSON:API (startup) ...  0:00:00:00.0073801 ...   1.40%

JsonApiDotNetCore.Middleware.JsonApiMiddleware: Information: Measurement results for GET http://localhost:14140/api/v1/todoItems?include=owner,assignee,tags:
JSON:API middleware .................................  0:00:00:00.0000286 ...   1.14%
  Subsequent middleware .............................  0:00:00:00.0002976 ...  11.86%
    Parse query string ..............................  0:00:00:00.0000360 ...   1.43%
    Service - Get resources .........................  0:00:00:00.0001394 ...   5.55%
      Repository - Count resources ..................  0:00:00:00.0000030 ...   0.12%
        Convert QueryLayer to System.Expression .....  0:00:00:00.0001265 ...   5.04%
          Convert System.Expression to IQueryable ...  0:00:00:00.0000009 ...   0.04%
        Execute SQL (count) .........................  0:00:00:00.0122070
      Top-level query composition ...................  0:00:00:00.0000984 ...   3.92%
      Nested query composition ......................  0:00:00:00.0000351 ...   1.40%
      Repository - Get resource(s) ..................  0:00:00:00.0000021 ...   0.08%
        Convert QueryLayer to System.Expression .....  0:00:00:00.0003258 ...  12.98%
          Convert System.Expression to IQueryable ...  0:00:00:00.0000013 ...   0.05%
        Execute SQL (data) ..........................  0:00:00:00.0124639
    Write response body .............................  0:00:00:00.0004246 ...  16.92%
      Serializer.Build (list) .......................  0:00:00:00.0007376 ...  29.39%
      Newtonsoft.Serialize ..........................  0:00:00:00.0002527 ...  10.07%

Note that the percentages in non-leaves indicate the relative time spent in that call, they are not cumulative. For example, in the request above, the relative time spent in "Write response body" is 16.92% (self) + 29.39% + 10.07% (children) = ~55%.

[codecov]

Codecov Report

Merging #1023 (aac3085) into master (d555bb5) will decrease coverage by 1.76%.
The diff coverage is 54.25%.

❗ Current head aac3085 differs from pull request most recent head 3904223. Consider uploading reports for the commit 3904223 to get more accurate results

@@            Coverage Diff             @@
##           master    #1023      +/-   ##
==========================================
- Coverage   91.63%   89.86%   -1.77%     
==========================================
  Files         252      258       +6     
  Lines        6777     7027     +250     
==========================================
+ Hits         6210     6315     +105     
- Misses        567      712     +145     

Impacted Files	Coverage Δ
.../JsonApiDotNetCoreExample/Startups/EmptyStartup.cs	0.00% <ø> (ø)
...sonApiDotNetCore/Diagnostics/CascadingCodeTimer.cs	10.18% <10.18%> (ø)
...piDotNetCore/Diagnostics/AspNetCodeTimerSession.cs	15.38% <15.38%> (ø)
...DotNetCore/Diagnostics/CodeTimingSessionManager.cs	41.66% <41.66%> (ø)
...iDotNetCore/Diagnostics/DefaultCodeTimerSession.cs	60.00% <60.00%> (ø)
...JsonApiDotNetCore/Diagnostics/DisabledCodeTimer.cs	83.33% <83.33%> (ø)
.../JsonApiDotNetCore/Middleware/JsonApiMiddleware.cs	97.72% <89.65%> (-2.28%)	⬇️
...mples/JsonApiDotNetCoreExample/Startups/Startup.cs	95.83% <94.73%> (-4.17%)	⬇️
...onApiDotNetCore/Diagnostics/MeasurementSettings.cs	100.00% <100.00%> (ø)
...iDotNetCore/Queries/Internal/QueryLayerComposer.cs	100.00% <100.00%> (ø)
... and 17 more

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[bart-degreed]

Reverted Resharper/Rider update due to hanging cibuild. Tracked at https://youtrack.jetbrains.com/issue/RSRP-481371#focus=Comments-27-5106579.0-0.

[maurei]

Added two comments earlier