fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/astro/dist/cli/flags.d.ts

@@ -0,0 +1,11 @@
+import type { Arguments } from 'yargs-parser';
+import { Logger } from '../core/logger/core.js';
+import type { AstroInlineConfig } from '../types/public/config.js';
+export type Flags = Arguments;
+/** @deprecated Use AstroConfigResolver instead */
+export declare function flagsToAstroInlineConfig(flags: Flags): AstroInlineConfig;
+/**
+ * The `logging` is usually created from an `AstroInlineConfig`, but some flows like `add`
+ * doesn't read the AstroConfig directly, so we create a `logging` object from the CLI flags instead.
+ */
+export declare function createLoggerFromFlags(flags: Flags): Logger;