feat: add a link to blecon.de

src/link-utils.ts

@@ -0,0 +1,7 @@
+export function getRel(
+  external: boolean | "me" | null | undefined,
+): string | undefined {
+  return external
+    ? "external nofollow noreferrer".concat(external === "me" ? " me" : "")
+    : undefined;
+}