This is a Nuget package a which contains custom MSBuild Tasks that allow downloading archives to build and publish directories.
The following example will download geckodriver to output gecko-driver-0.34.0/(linux-x64|osx-arm64|win-x64)/geckodriver(.exe)? depending on RuntimeIdentifier:
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
</PropertyGroup>
<ItemGroup>
<DownlaodArchive
Include="gecko-driver-0.34.0"
Visible="false"
RID-linux-x64="https://github.com/mozilla/geckodriver/releases/download/v0.34.0/geckodriver-v0.34.0-linux64.tar.gz"
RID-osx-arm64="https://github.com/mozilla/geckodriver/releases/download/v0.34.0/geckodriver-v0.34.0-macos-aarch64.tar.gz"
RID-win-x64="https://github.com/mozilla/geckodriver/releases/download/v0.34.0/geckodriver-v0.34.0-win32.zip"
/>
</ItemGroup>
<ItemGroup>
<PackageReference Include="DownloadArchive" Version="1.0.7" />
</ItemGroup>
</Project>