Add scopes field to integration structure

[shiftinv]

Unsure about optional/nullable since I don't have access to a youtube/twitch integration to test with, just assuming it's optional as that'd match the other fields.

Example from /guilds/{guild.id}/integrations:

{
    "id": "...",
    "type": "discord",
    "name": "...",
    "account": {},
    "application": {},
    "enabled": true,
    "scopes": [
        "applications.commands",
        "webhook.incoming",
        "bot"
    ],
    "user": {}
}

[thewilloftheshadow]

Structure from Twitch integration, it is optional

{
        "id": "...",
        "type": "twitch",
        "name": "...",
        "account": {
            "id": "...",
            "name": "..."
        },
        "user": {
            "id": "...",
            "username": "...",
            "avatar": "...",
            "avatar_decoration": null,
            "discriminator": "...",
            "public_flags": 0
        },
        "revoked": false,
        "enabled": true,
        "expire_behavior": 0,
        "expire_grace_period": 1,
        "subscriber_count": 7,
        "synced_at": "2022-08-09T18:04:02.036000+00:00",
        "role_id": "...",
        "syncing": false,
        "enable_emoticons": false
    },

[shiftinv]

Structure from Twitch integration, it is optional

Cool, thanks for checking