Install packages delivered as a compressed installer

Some publishers provide a compressed file with an installer inside. This feature would enable a user to install such a package.
For example: microsoft/winget-pkgs#9891 (comment)

Proposed technical implementation details (optional)

The manifest would need to be able to identify this type of installer. The client would be able to download the file, verify the file, extract the installer, and execute the installer.

Related to:

• Support installing .zip files #140