chore: use tsup config in ts

Author: joaotonaco

tsup.config.json

@@ -0,0 +1,11 @@
+import type { Options } from "tsup";
+
+export default {
+	target: "es2020",
+	format: ["cjs", "esm"],
+	outDir: "lib",
+	splitting: false,
+	sourcemap: true,
+	clean: true,
+	dts: true,
+} satisfies Options;