fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/tailwindcss/dist/plugin.d.mts

@@ -0,0 +1,11 @@
+export { P as PluginUtils } from './resolve-config-QUZ9b-Gn.mjs';
+import { a as PluginFn, C as Config, b as PluginWithConfig, c as PluginWithOptions } from './types-CJYAW1ql.mjs';
+export { d as PluginAPI, P as PluginsConfig, T as ThemeConfig } from './types-CJYAW1ql.mjs';
+import './colors.mjs';
+
+declare function createPlugin(handler: PluginFn, config?: Partial<Config>): PluginWithConfig;
+declare namespace createPlugin {
+    var withOptions: <T>(pluginFunction: (options?: T) => PluginFn, configFunction?: (options?: T) => Partial<Config>) => PluginWithOptions<T>;
+}
+
+export { Config, PluginFn as PluginCreator, createPlugin as default };