feat: implement account updates on backend

server/api/account/update.patch.ts

@@ -0,0 +1,18 @@
+import { AccountUpdateSchema } from "~~/shared/api-types";
+
+export default defineEventHandler(async (event): Promise<void> => {
+	const body = await readZodBody(event, AccountUpdateSchema);
+	const apiFetch = useHttpApi(event);
+	const auth = enforceLoggedIn(event);
+
+	// There's no equivalent GRPC endpoint to use, so we're using the HTTP api
+	await apiFetch('/v1/user', {
+		headers: {
+			'Authorization': `Bearer ${auth.token}`,
+		},
+		body: {
+			mii: body.mii,
+			environment: body.environment
+		}
+	})
+});