fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/@capsizecss/unpack/dist/fs.d.mts

@@ -0,0 +1,20 @@
+import { n as Options } from "./shared-CnZ3qQtb.mjs";
+
+//#region src/fs.d.ts
+declare const fromFile: (path: string, options?: Options) => Promise<{
+  familyName: string;
+  fullName: string;
+  postscriptName: string;
+  capHeight: number;
+  ascent: number;
+  descent: number;
+  lineGap: number;
+  unitsPerEm: number;
+  xHeight: number;
+  xWidthAvg: number;
+  subsets: Record<"latin" | "thai", {
+    xWidthAvg: number;
+  }>;
+}>;
+//#endregion
+export { fromFile };