.NET 8 upgrade

[seantleonard]

Upgrade project to target .NET8

[seesharprun]

Is multi-targeting a consideration? This would ensure that the tool works across multiple versions of .NET (6, 7, 8, 9+).

Today, your CLI project file targets .NET 6.0 explicitly:

data-api-builder/src/Cli/Cli.csproj

Line 5 in 6ce6fe5

<TargetFramework>net6.0</TargetFramework>

I put together a sample repository (https://github.com/seesharprun/demo-dotnet-tool-multi-target) where I demonstrate multi-targeting .NET 6, 7, and 8 in a single NuGet package:

<TargetFramework>net8.0</TargetFramework>
<TargetFrameworks>net8.0;net7.0;net6.0;</TargetFrameworks>

Then, you can dotnet install to any machine running any of those flavors of .NET.

Multi-targeting is referenced in the Create a .NET tool tutorial.

It's also going to become more important as the universal GitHub Codespaces devcontainer image evolves rapidly. .NET 9 support will be added later this year and .NET 8 support will be dropped quickly after .NET 10 is available per their policy on keeping only the LTS and stable variants of any developer SDK. You will also see such quick updates from tools like the Azure Cloud Shell. Multi-targeting might make it easier to temporarily support a new flavor of .NET while waiting for the larger rework project.