fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/astro/dist/actions/utils.d.ts

@@ -0,0 +1,10 @@
+import type fsMod from 'node:fs';
+import type { APIContext } from '../types/public/context.js';
+import { type ActionAPIContext, type Locals } from './runtime/utils.js';
+export declare function hasActionPayload(locals: APIContext['locals']): locals is Locals;
+export declare function createGetActionResult(locals: APIContext['locals']): APIContext['getActionResult'];
+export declare function createCallAction(context: ActionAPIContext): APIContext['callAction'];
+/**
+ * Check whether the Actions config file is present.
+ */
+export declare function isActionsFilePresent(fs: typeof fsMod, srcDir: URL): Promise<string | false>;