fix: Add nixpacks configuration for Astro deployment

dealplustech-astro/node_modules/unstorage/drivers/utils/index.mjs

@@ -0,0 +1,28 @@
+export function defineDriver(factory) {
+  return factory;
+}
+export function normalizeKey(key, sep = ":") {
+  if (!key) {
+    return "";
+  }
+  return key.replace(/[:/\\]/g, sep).replace(/^[:/\\]|[:/\\]$/g, "");
+}
+export function joinKeys(...keys) {
+  return keys.map((key) => normalizeKey(key)).filter(Boolean).join(":");
+}
+export function createError(driver, message, opts) {
+  const err = new Error(`[unstorage] [${driver}] ${message}`, opts);
+  if (Error.captureStackTrace) {
+    Error.captureStackTrace(err, createError);
+  }
+  return err;
+}
+export function createRequiredError(driver, name) {
+  if (Array.isArray(name)) {
+    return createError(
+      driver,
+      `Missing some of the required options ${name.map((n) => "`" + n + "`").join(", ")}`
+    );
+  }
+  return createError(driver, `Missing required option \`${name}\`.`);
+}