Switch to incremental source generator API

[bkoelman]

Refactored the Controller source generator to use the newer incremental API, which is supposed to massively improve typing performance in the IDE.

Improvements:

• Pipeline of cacheable outputs to improve performance during typing in IDEs.
• Optimized execution time of core analysis logic.
• In case of a crash during code generation, the generated file contains a #error line with commented-out details.
• Improved auto-rename of duplicate files (happens when the same type name appears in multiple namespaces).
• The generated list of namespace imports is sorted alphabetically.
• Allow resource types declared as record instead of class.

Requires Visual Studio 2022 v17.13 or higher.

Closes #1447.

QUALITY CHECKLIST

• Changes implemented in code
• Complies with our contributing guidelines
• Adapted tests
• N/A: Documentation updated

[codecov]

Codecov Report

❌ Patch coverage is 88.18182% with 26 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.80%. Comparing base (49511f4) to head (0fd9c7f).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
...Core.SourceGenerators/ControllerSourceGenerator.cs	90.59%	4 Missing and 7 partials ⚠️
...eGenerators/ImmutableDictionaryEqualityComparer.cs	15.38%	10 Missing and 1 partial ⚠️
...JsonApiDotNetCore.SourceGenerators/LocationInfo.cs	57.14%	2 Missing and 1 partial ⚠️
...ApiDotNetCore.SourceGenerators/SourceCodeWriter.cs	97.67%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1814      +/-   ##
==========================================
- Coverage   92.87%   92.80%   -0.08%     
==========================================
  Files         431      437       +6     
  Lines       14686    14809     +123     
  Branches     2361     2388      +27     
==========================================
+ Hits        13640    13743     +103     
- Misses        638      651      +13     
- Partials      408      415       +7     

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