Feature work: Azure functions integration test framework

[tippmar-nr]

• Adds a testing framework and a very basic implementation of an Azure function test app and corresponding integration tests.
• Updates the all_solutions workflow to install required tools and include the AzureFunction workspace in the integration test matrix.
• Updates the profiler to exclude FUNC.EXE (the local Azure test tool) from instrumentation. Note that I had to update a number of profiler unit tests also, since I'm now referencing _systemCalls in areas that tests previously didn't expect.

[chynesNR]

Looks good!

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 58.82353% with 7 lines in your changes missing coverage. Please review.

Project coverage is 81.13%. Comparing base (9483c5d) to head (5302237).

Files with missing lines	Patch %	Lines
...nt/NewRelic/Profiler/MethodRewriter/ISystemCalls.h	0.00%	4 Missing ⚠️
...nt/NewRelic/Profiler/Configuration/Configuration.h	76.92%	3 Missing ⚠️

Additional details and impacted files

@@                     Coverage Diff                     @@
##           feature/azure-functions    #2737      +/-   ##
===========================================================
- Coverage                    81.18%   81.13%   -0.05%     
===========================================================
  Files                          459      459              
  Lines                        29196    29204       +8     
  Branches                      3223     3223              
===========================================================
- Hits                         23703    23695       -8     
- Misses                        4703     4716      +13     
- Partials                       790      793       +3     

Flag	Coverage Δ
Agent	82.16% <ø> (-0.04%)	⬇️
Profiler	71.98% <58.82%> (-0.20%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/Agent/NewRelic/Profiler/Logging/Logger.h	86.95% <ø> (ø)
...nt/NewRelic/Profiler/Configuration/Configuration.h	75.55% <76.92%> (-1.22%)	⬇️
...nt/NewRelic/Profiler/MethodRewriter/ISystemCalls.h	46.55% <0.00%> (-2.54%)	⬇️

... and 1 file with indirect coverage changes