Add badges (#5)

README.md

@@ -1,5 +1,16 @@
 # AnyPackage.DotNet.Tool
 
+[![gallery-image]][gallery-site]
+[![build-image]][build-site]
+[![cf-image]][cf-site]
+
+[gallery-image]: https://img.shields.io/powershellgallery/dt/AnyPackage.DotNet.Tool?logo=powershell
+[build-image]: https://img.shields.io/github/actions/workflow/status/anypackage/dotnet-tool/ci.yml
+[cf-image]: https://img.shields.io/codefactor/grade/github/anypackage/dotnet-tool
+[gallery-site]: https://www.powershellgallery.com/packages/AnyPackage.DotNet.Tool
+[build-site]: https://github.com/anypackage/dotnet-tool/actions/workflows/ci.yml
+[cf-site]: https://www.codefactor.io/repository/github/anypackage/dotnet-tool
+
 AnyPackage.DotNet.Tool is an AnyPackage provider that facilitates installing .NET Tools.
 
 ## Install AnyPackage.DotNet.Tool