Forwared Proxy Header on Api Calls

[Guacam-Ole]

Feature request:

Pocket Base allows Rate Limits depending on IP adresses. It also allows using Proxy Headers like "X-Forwarded-For". Because Pocketbase isn't called directly from the client but from the web application it is missing any Headers coming from nGinx for example and so the ip is always just the IP of the server running the Web Application.

So forwarding any Proxy-Headers from the Web Server on db.api-calls would be a big help to catch bad actors like scrapers, etc.