fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/stringify-entities/lib/index.d.ts

@@ -0,0 +1,24 @@
+/**
+ * Encode special characters in `value`.
+ *
+ * @param {string} value
+ *   Value to encode.
+ * @param {Options} [options]
+ *   Configuration.
+ * @returns {string}
+ *   Encoded value.
+ */
+export function stringifyEntities(value: string, options?: Options | undefined): string;
+/**
+ * Encode special characters in `value` as hexadecimals.
+ *
+ * @param {string} value
+ *   Value to encode.
+ * @param {LightOptions} [options]
+ *   Configuration.
+ * @returns {string}
+ *   Encoded value.
+ */
+export function stringifyEntitiesLight(value: string, options?: import("./core.js").CoreOptions | undefined): string;
+export type Options = import('./core.js').CoreOptions & import('./util/format-smart.js').FormatSmartOptions;
+export type LightOptions = import('./core.js').CoreOptions;