Add #pragma warning disable to generated code headers

[IngbertPalm]

The source code generated by FastCloner.SourceGenerator generates unnecessary CS8602 and CS8604 warnings during compilation.

Added lines to the generated source code to avoid warnings.

[Copilot]

Pull request overview

This PR updates the FastCloner source generator output to suppress nullable-related compiler warnings emitted by generated code, reducing noise during consumer compilation.

Changes:

• Add #pragma warning disable to the generated header in context-based generated files.
• Add #pragma warning disable to the generated header in per-type clone extension generated files.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/FastCloner.SourceGenerator/ContextCodeGenerator.cs	Adds a warning-suppression pragma to the generated context file header.
src/FastCloner.SourceGenerator/CloneCodeGenerator.cs	Adds a warning-suppression pragma to the generated clone extension file header.

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[lofcz]

I'd rather generate warning free code, can you contribute an example of what currently generates warnings?

[IngbertPalm]

Here's a small sample that generates the compilation warnings.

CloneTest.zip

Kind regards,

Ingbert

[lofcz]

@IngbertPalm thanks for the repro, fixed in #34. I'll add you as co-author to one of the commits.