fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/micromark-util-decode-string/dev/index.d.ts

@@ -0,0 +1,14 @@
+/**
+ * Decode markdown strings (which occur in places such as fenced code info
+ * strings, destinations, labels, and titles).
+ *
+ * The “string” content type allows character escapes and -references.
+ * This decodes those.
+ *
+ * @param {string} value
+ *   Value to decode.
+ * @returns {string}
+ *   Decoded value.
+ */
+export function decodeString(value: string): string;
+//# sourceMappingURL=index.d.ts.map