fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/micromark-extension-gfm-autolink-literal/lib/syntax.d.ts

@@ -0,0 +1,10 @@
+/**
+ * Create an extension for `micromark` to support GitHub autolink literal
+ * syntax.
+ *
+ * @returns {Extension}
+ *   Extension for `micromark` that can be passed in `extensions` to enable GFM
+ *   autolink literal syntax.
+ */
+export function gfmAutolinkLiteral(): Extension;
+import type { Extension } from 'micromark-util-types';