Add or update a .NET package reference in a project file. More information: https://learn.microsoft.com/dotnet/core/tools/dotnet-add-package.
dotnet add package package
dotnet add path/to/file.csproj package package
dotnet add package package --version 1.0.0
dotnet add package package --source https://api.nuget.org/v3/index.json
dotnet add package package --framework net7.0
~/.nuget/packages
by default):dotnet add package package --package-directory path/to/directory