Extend the existing analyzers to support nullable enums - #244

/Users/runner/.dotnet/sdk/10.0.103/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(266,5): warning NETSDK1188: Package Microsoft.CodeAnalysis.Common 4.0.1 has a resource with the locale 'ru'. This locale is not recognized by .NET. Consider notifying the package author that it appears to be using an invalid locale. [/Users/runner/work/NetEscapades.EnumGenerators/NetEscapades.EnumGenerators/tests/NetEscapades.EnumGenerators.Benchmarks/NetEscapades.EnumGenerators.Benchmarks.csproj::TargetFramework=net10.0]

/Users/runner/.dotnet/sdk/10.0.103/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(266,5): warning NETSDK1188: Package Microsoft.CodeAnalysis.Common 4.0.1 has a resource with the locale 'pt-br'. This locale is not recognized by .NET. Consider notifying the package author that it appears to be using an invalid locale. [/Users/runner/work/NetEscapades.EnumGenerators/NetEscapades.EnumGenerators/tests/NetEscapades.EnumGenerators.Benchmarks/NetEscapades.EnumGenerators.Benchmarks.csproj::TargetFramework=net10.0]

/Users/runner/.dotnet/sdk/10.0.103/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(266,5): warning NETSDK1188: Package Microsoft.CodeAnalysis.Common 4.0.1 has a resource with the locale 'pl'. This locale is not recognized by .NET. Consider notifying the package author that it appears to be using an invalid locale. [/Users/runner/work/NetEscapades.EnumGenerators/NetEscapades.EnumGenerators/tests/NetEscapades.EnumGenerators.Benchmarks/NetEscapades.EnumGenerators.Benchmarks.csproj::TargetFramework=net10.0]

/Users/runner/.dotnet/sdk/10.0.103/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(266,5): warning NETSDK1188: Package Microsoft.CodeAnalysis.Common 4.0.1 has a resource with the locale 'ko'. This locale is not recognized by .NET. Consider notifying the package author that it appears to be using an invalid locale. [/Users/runner/work/NetEscapades.EnumGenerators/NetEscapades.EnumGenerators/tests/NetEscapades.EnumGenerators.Benchmarks/NetEscapades.EnumGenerators.Benchmarks.csproj::TargetFramework=net10.0]

/Users/runner/.dotnet/sdk/10.0.103/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(266,5): warning NETSDK1188: Package Microsoft.CodeAnalysis.Common 4.0.1 has a resource with the locale 'ja'. This locale is not recognized by .NET. Consider notifying the package author that it appears to be using an invalid locale. [/Users/runner/work/NetEscapades.EnumGenerators/NetEscapades.EnumGenerators/tests/NetEscapades.EnumGenerators.Benchmarks/NetEscapades.EnumGenerators.Benchmarks.csproj::TargetFramework=net10.0]

/Users/runner/.dotnet/sdk/10.0.103/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(266,5): warning NETSDK1188: Package Microsoft.CodeAnalysis.Common 4.0.1 has a resource with the locale 'it'. This locale is not recognized by .NET. Consider notifying the package author that it appears to be using an invalid locale. [/Users/runner/work/NetEscapades.EnumGenerators/NetEscapades.EnumGenerators/tests/NetEscapades.EnumGenerators.Benchmarks/NetEscapades.EnumGenerators.Benchmarks.csproj::TargetFramework=net10.0]

/Users/runner/.dotnet/sdk/10.0.103/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(266,5): warning NETSDK1188: Package Microsoft.CodeAnalysis.Common 4.0.1 has a resource with the locale 'fr'. This locale is not recognized by .NET. Consider notifying the package author that it appears to be using an invalid locale. [/Users/runner/work/NetEscapades.EnumGenerators/NetEscapades.EnumGenerators/tests/NetEscapades.EnumGenerators.Benchmarks/NetEscapades.EnumGenerators.Benchmarks.csproj::TargetFramework=net10.0]

/Users/runner/.dotnet/sdk/10.0.103/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(266,5): warning NETSDK1188: Package Microsoft.CodeAnalysis.Common 4.0.1 has a resource with the locale 'es'. This locale is not recognized by .NET. Consider notifying the package author that it appears to be using an invalid locale. [/Users/runner/work/NetEscapades.EnumGenerators/NetEscapades.EnumGenerators/tests/NetEscapades.EnumGenerators.Benchmarks/NetEscapades.EnumGenerators.Benchmarks.csproj::TargetFramework=net10.0]

/Users/runner/.dotnet/sdk/10.0.103/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(266,5): warning NETSDK1188: Package Microsoft.CodeAnalysis.Common 4.0.1 has a resource with the locale 'de'. This locale is not recognized by .NET. Consider notifying the package author that it appears to be using an invalid locale. [/Users/runner/work/NetEscapades.EnumGenerators/NetEscapades.EnumGenerators/tests/NetEscapades.EnumGenerators.Benchmarks/NetEscapades.EnumGenerators.Benchmarks.csproj::TargetFramework=net10.0]