Use LibraryImport instead of DllImport on net7+ for better performance

[Youssef1313]

Is your feature request related to a problem?

Performance

Describe the solution you would like

Update SkiaSharpGenerator to use LibraryImport when possible, e.g:

					writer.WriteLine($"\t\t#if NET7_0_OR_GREATER");
					writer.WriteLine($"\t\t[LibraryImport ({config.DllName})]");
					writer.WriteLine($"\t\t#else");
					writer.WriteLine($"\t\t[DllImport ({config.DllName}, CallingConvention = CallingConvention.Cdecl)]");
					writer.WriteLine($"\t\t#endif");

(Not sure if it will be that trivial)

Describe alternatives you have considered

N/A

Additional context

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

[Gillibald]

#2917

[Youssef1313]

Thanks. Closing as a duplicate of #2615 then