fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/astro/dist/vite-plugin-astro-server/plugin.d.ts

@@ -0,0 +1,21 @@
+import type fs from 'node:fs';
+import type * as vite from 'vite';
+import type { SSRManifest } from '../core/app/types.js';
+import type { Logger } from '../core/logger/core.js';
+import type { AstroSettings, RoutesList } from '../types/astro.js';
+interface AstroPluginOptions {
+    settings: AstroSettings;
+    logger: Logger;
+    fs: typeof fs;
+    routesList: RoutesList;
+    manifest: SSRManifest;
+}
+export default function createVitePluginAstroServer({ settings, logger, fs: fsMod, routesList, manifest, }: AstroPluginOptions): vite.Plugin;
+/**
+ * It creates a `SSRManifest` from the `AstroSettings`.
+ *
+ * Renderers needs to be pulled out from the page module emitted during the build.
+ * @param settings
+ */
+export declare function createDevelopmentManifest(settings: AstroSettings): SSRManifest;
+export {};