Updated to dotnet 10

[temonk]

This pull request introduces several important updates to the project, focusing on upgrading to .NET 10.0, centralizing and simplifying NuGet package management, and improving the NuGet publishing workflow. The changes also include a major version bump to 2.0.0, reflecting these significant updates.

.NET and Visual Studio Upgrades:

• Added .NET 10.0 as a target framework across the solution, including in CI workflows (.github/workflows/build_nuget_dont_publish.yml, .github/workflows/dotnet.yml, .github/workflows/publish_nuget.yml, Directory.Build.props, test project files) and updated the solution file to Visual Studio 18.1. [1] [2] [3] [4] [5] [6] [7] [8]
• Updated the default target frameworks in Directory.Build.props to include net10.0.

NuGet Package Management Improvements:

• Centralized NuGet package version management by introducing Directory.Packages.props and removing explicit version numbers from individual project files. [1] [2] [3] [4]
• Enabled central package version management via the ManagePackageVersionsCentrally property.

NuGet Publishing Workflow Enhancements:

• Updated the NuGet publishing workflow to also publish symbol packages (.snupkg), facilitating better debugging support.

Versioning:

• Bumped the project version to 2.0.0 in Directory.Build.props to reflect breaking and significant changes.

Miscellaneous:

• Added Directory.Packages.props to the solution file for improved management of solution items.

[Copilot]

Pull request overview

This pull request aims to upgrade the project to .NET 10.0 and modernize its NuGet package management through centralization. However, the PR contains several critical issues that will prevent it from working correctly.

Key intended changes:

• Upgrade target framework to .NET 10.0 across all projects and CI/CD workflows
• Centralize NuGet package version management using Directory.Packages.props
• Bump version to 2.0.0 and add symbol package publishing support

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/AltaSoft.ChoiceGenerator.Tests/AltaSoft.ChoiceGenerator.Tests.csproj	Updated target framework to net10.0 and removed explicit package versions
tests/AltaSoft.Choice.Generator.SnapshotTests/AltaSoft.Choice.Generator.SnapshotTests.csproj	Updated target framework to net10.0, removed explicit package versions, contains duplicate project reference
src/AltaSoft.Choice/AltaSoft.Choice.csproj	File has critical encoding corruption making it unreadable
src/AltaSoft.Choice.Generator/AltaSoft.Choice.Generator.csproj	Removed explicit package versions to use centralized management
Directory.Packages.props	Introduced centralized package version management with multiple non-existent package versions
Directory.Build.props	Added net10.0 to default target frameworks and bumped version to 2.0.0
AltaSoft.ChoiceGenerator.sln	Updated Visual Studio version reference (with formatting issue) and added Directory.Packages.props
.github/workflows/publish_nuget.yml	Added .NET 10.0.x SDK setup and symbol package publishing
.github/workflows/dotnet.yml	Added .NET 10.0.x SDK setup
.github/workflows/build_nuget_dont_publish.yml	Added .NET 10.0.x SDK setup

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