Experimental support for a curated list of store apps for developers.

New Features

#535 Replace yaml-cpp with libyaml
#544 Add pre-indexed Microsoft Store source

winget features will show the status of the Microsoft Store Support.
winget settings will launch the settings file in your default JSON editor.

Add the following code block to your settings file and the store source will be added

{
    "experimentalFeatures": {
        "experimentalMSStore": true
    }
}