Add ability to specific install Xcode CLI tools

I want to be able to script the installation of the Xcode 11 CLI tools:

The link leads to https://download.developer.apple.com/Developer_Tools/Command_Line_Tools_for_Xcode_11_GM_Seed/Command_Line_Tools_for_Xcode_11_GM_Seed.dmg.

Currently, xcode-install will only install the CLI tools from the App Store.