feat(api): add captcha verify utility

lib/server/middlewareButNotReally/captcha.ts

@@ -0,0 +1,21 @@
+import { H3Event, EventHandlerRequest } from "h3";
+export default async function (ev: H3Event<EventHandlerRequest>) {
+	const body = await readBody(ev);
+
+	let { data: cres }: { data: any } = await useFetch(
+		"https://www.google.com/recaptcha/api/siteverify",
+		{
+			method: "post",
+			body: {
+				secret: useRuntimeConfig().captcha.secret,
+				response: body["g-recaptcha-response"],
+			},
+		},
+	);
+	if (!cres.value.success) {
+		throw createError({
+			statusCode: 400,
+			message: "bad recaptcha",
+		});
+	}
+}