[Feature Request] api for post account action

[xiNeRoar]

Wish jfa-go add api to manage post account creation action which can connect to existing automation tool like n8n/ifttt to have more robust usage

[hrfee]

I've added a webhook sorta thing in e5f79c6, in Settings > Webhooks > User Creation. It'll POST to the specified URLs with a JSON payload similar to this (Its the respUser object):

{
    "accounts_admin": true,
    "admin": false,
    "disabled": true,
    "discord": "string",
    "discord_id": "string",
    "email": "[email protected]",
    "expiry": 1617737207510,
    "id": "fdgsdfg45534fa",
    "label": "string",
    "last_active": 1617737207510,
    "matrix": "string",
    "name": "jeff",
    "notify_discord": true,
    "notify_email": true,
    "notify_matrix": true,
    "notify_telegram": true,
    "referrals_enabled": true,
    "telegram": "string"
}

Let me know if this'll do, if there's any missing information you think should be supplied, or if there's any other "events" this feature should support.