Update cheatsheets

dotnet-add-package

@@ -0,0 +1,33 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# dotnet add package
+
+> Add or update a .NET package reference in a project file.
+> More information: <https://learn.microsoft.com/dotnet/core/tools/dotnet-add-package>.
+
+- Add a package to the project in the current directory:
+
+`dotnet add package {{package}}`
+
+- Add a package to a specific project:
+
+`dotnet add {{path/to/file.csproj}} package {{package}}`
+
+- Add a specific version of a package to the project:
+
+`dotnet add package {{package}} --version {{1.0.0}}`
+
+- Add a package using a specific NuGet source:
+
+`dotnet add package {{package}} --source {{https://api.nuget.org/v3/index.json}}`
+
+- Add a package only when targeting a specific framework:
+
+`dotnet add package {{package}} --framework {{net7.0}}`
+
+- Add and specify the directory where to restore packages (`~/.nuget/packages` by default):
+
+`dotnet add package {{package}} --package-directory {{path/to/directory}}`