Copy objects from RocksDB to MongoDB demo

This program will transfer all objects from one RocksDB instance to MongoDB.

Try it out!

1. Install Rust
2. Set up MongoDB docker instance

$ docker run --name sui -p 27017:27017/tcp -d mongo:latest

3. Run the app

$ cargo run --release

It will create a temporary RocksDB instance, fill it with sample data, and copy those objects to the MongoDB instance.