Fix NuGet package versions to use correct .NET 10 preview build numbers

[Copilot]

This PR updates the project configuration files to support .NET 10 preview, ensuring that NuGet package resolution works correctly with the actual available preview versions.

Problem

The repository's global.json was configured to use .NET 10 preview SDK (10.0.100-preview.7.25380.108), but the package references were using shortened version numbers like 10.0.0-preview.7 which don't exist in NuGet. This caused package restoration to fail with errors like:

Version 10.0.0-preview.7 of package dotnet-ef is not found in NuGet feeds

Solution

Updated all .NET 10 preview package references to use the correct full version numbers that are actually available on NuGet:

Directory.Packages.props

• Updated EFCoreVersion range from [10.0.0-preview.7,10.0.999] to [10.0.0-preview.7.25380.108,10.0.999]
• Updated Microsoft.AspNetCore.* packages to use 10.0.0-preview.7.25380.108
• Updated Microsoft.Extensions.* packages to use 10.0.0-preview.7.25380.108
• Updated System.* packages to use 10.0.0-preview.7.25380.108

Directory.Build.props

• Updated all target framework properties from net9.0 to net10.0

dotnet-tools.json

• Updated dotnet-ef tool from 10.0.0-preview.7 to 10.0.0-preview.7.25380.108

The changes align all configuration files to use the correct .NET 10 preview versions that match what's available on NuGet, enabling proper package restoration and tool functionality.

Fixes #80.

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[renemadsen]

@copilot it gives this error:
Version 10.0.0-preview.7 of package dotnet-ef is not found in NuGet feeds https://api.nuget.org/v3/index.json

[Copilot]

@copilot it gives this error:
Version 10.0.0-preview.7 of package dotnet-ef is not found in NuGet feeds https://api.nuget.org/v3/index.json

You're absolutely right! The issue was that I used the shortened version 10.0.0-preview.7 which doesn't exist in NuGet. The actual available version is 10.0.0-preview.7.25380.108.

I've fixed this in commit deea6a5 by updating:

• dotnet-tools.json to use 10.0.0-preview.7.25380.108
• All Microsoft.AspNetCore., Microsoft.Extensions., and System.* packages in Directory.Packages.props to use the full version number
• The EFCoreVersion range to start from the correct full version

The versions now match what's actually available on NuGet and should resolve the package not found errors.