⏫Add level up

core/api/level-up.ts

@@ -0,0 +1,15 @@
+import type { FrontContext } from "../types/front-context";
+
+export async function levelUp({
+	signMessage,
+	connection,
+	publicKey,
+	playsig,
+}: FrontContext): Promise<void> {
+	if (!playsig) {
+		throw new Error("playsig is required to level up !");
+	}
+
+	const levelUpRequest = await signMessage({ playsig, publicKey });
+	connection.send({ levelUpRequest });
+}