.NET 8.0 support

[MagicAndre1981]

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.net 8.0 support

fixes: #157

Change the version later to your next release version.

[MagicAndre1981]

I have no idea why test fails if all 310 tests worked:

Test Run Successful.
Total tests: 310
     Passed: 310
 Total time: 5.2126 Seconds
     4>Done Building Project "D:\a\config\config\src\Config.Net.Tests\Config.Net.Tests.csproj" (VSTest target(s)) -- FAILED.
     1>Done Building Project "D:\a\config\config\src\Config.Net.sln" (VSTest target(s)) -- FAILED.

Build FAILED.
    0 Warning(s)
    0 Error(s)

[MagicAndre1981]

you added .net 8 support on your own, so this can be closed