fix: gridstore warning

Author: Moumouls

src/Adapters/Files/GridStoreAdapter.js

@@ -0,0 +1,4 @@
+// Note: GridStore was replaced by GridFSBucketAdapter by default in 2018 by @flovilmart
+throw new Error(
+  'GrideStoreAdapter: GrideStore is no longer supported by parse server and mongodb, use GridFSBucketAdapter instead.'
+);