[Spec](https://github.com/NuGet/Home/wiki/Global-Tools---NuGet-Implementation) - [x] Filter /tools on only TFM and RID, so the settings XML can be put in /tools folder #6197 - [x] Block package reference to tool package type when there is no property to indicate the project is a temporary project to restore the package #6198 - [x] Allow nuget.config probing start path to be able to set in project file #6199 - [x] API to get tools folder from NuGet https://github.com/NuGet/Home/issues/6260
Spec