Add the ability to track Shift key when using context menu commands

[TheKing-OfTime]

Some of the built-in functions in context menus have an alternate behavior if you hold Shift while using them. It would be quite useful to give such a feature to bots as well.

This feature will allow context menu commands to have alternative behavior. For example, send a response with a normal message instead of an ephemeral message.
This feature can be implemented by adding a new field "alternative" in data object which can take values true or false.

Example Interaction

{
    "application_id": "775799577604522054",
    "channel_id": "772908445358620702",
    "data": {
        "id": "866818195033292851",
        "name": "context-menu-message-2",
        "resolved": { ... },
        "target_id": "867793854505943041",
        "alternative": false, //if shift pressed "true", else false.
        "type": 3
    },
    //...
}

edit: Mobile users could double-tap or hold the context menu instead of pressing the shift key

[erkinalp]

That would create issues in mobile clients (and third party clients, in case Discord starts officially supporting them).