feat: switch avatar imager to epicnabbo.nl with figure conversion

- Update imager to use epicnabbo.nl by default with effect=14 and img_format=apng
- Add figure string converter (old Habbo format -> epicnabbo.nl short format)
- Update avatarImageUrl to auto-convert figure strings
- Update online-users-widget to use new avatarImageUrl
- Add tests for imager and figure conversion

src/components/admin/online-users-widget.tsx

@@ -1,6 +1,7 @@
 "use client";
 
 import Image from "next/image";
+import { avatarImageUrl } from "@/lib/format";
 
 export interface OnlineUser {
 	id: number;
@@ -55,7 +56,7 @@ export function OnlineUsersWidget({
 						>
 							<div className="relative flex-none w-[50px] h-[62px]">
 								<Image
-									src={`https://www.habbo.com/habbo-imaging/avatarimage?width=50&height=62&direction=2&headonly=1&crop=face&action=wav&gender=m&look=${encodeURIComponent(user.look)}`}
+									src={avatarImageUrl(user.look, { size: "s", headOnly: true })}
 									alt={user.username}
 									fill
 									className="rounded object-cover border border-[var(--admin-border)]"