added missing script

pds/scripts/packNFT/has_packNFT_collection.cdc

@@ -0,0 +1,9 @@
+import PackNFT from "PackNFT"
+
+/// Check if an account has been set up to hold Pinnacle NFTs.
+///
+access(all) fun main(address: Address): Bool {
+    let account = getAccount(address)
+    return account.capabilities.borrow<
+        &PackNFT.Collection>(PackNFT.CollectionPublicPath) != nil
+}