enable nullable by default

[cataggar]

This enabled nullable by default and then adds #nullable disable anywhere it is needed in the current code. This will help ensure new code uses nullable and allows existing code to move to it incrementally. This follows the official guidance for moving to nullable.

Incremental step for

• Introduce nullable reference types #464

Following step 2 in https://learn.microsoft.com/en-us/dotnet/csharp/nullable-migration-strategies :

Nullable enable as the default: Set this default when you're actively developing new features. You want all new code to benefit from nullable reference types and nullable static analysis. Using this default means you must add a #nullable disable to the top of each file. You'll remove these preprocessor directives as you address the warnings in each file.

3435980 by Copilot in

• Enable nullable reference types by default cataggar/component-detection#7

e9ff160 by Copilot locally.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.8%. Comparing base (cf8fa35) to head (8af842c).

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1471     +/-   ##
=======================================
- Coverage   89.8%   89.8%   -0.1%     
=======================================
  Files        413     413             
  Lines      33117   33117             
  Branches    2047    2047             
=======================================
- Hits       29767   29766      -1     
  Misses      2935    2935             
- Partials     415     416      +1     

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[cataggar]

The CI build is currently failing due to:

• verification tests broken after charset-normalizer 3.4.4 published #1473