[Feature request]: Create a command to import schema from sample JSON

[Laskewitz]

Waht feature would you like to see?

I would like to see a command in the extension that gives me the possibility to convert sample JSON to a schema with all the recommended properties already added to the Open API v2 file.

For instance, the following JSON:

{
    "displayName": "John Doe",
    "age": 42
}

Should generate the following schema:

{
    "displayName": {
        "x-ms-summary": "Display Name",
        "description": "Description.",
        "type": "string"
    },
    "age": {
        "x-ms-summary": "Age",
        "description": "Description.",
        "type": "integer",
        "format": "int32"
    }
}