chore: implement write logic

Implement the write logic for:

- [memdb](https://github.com/cloudquery/plugin-sdk-java/blob/fc92542cb402d1ac0241aa781847eb8f2d211f87/lib/src/main/java/io/cloudquery/memdb/MemDB.java#L67)
- [PluginServer](https://github.com/cloudquery/plugin-sdk-java/blob/fc92542cb402d1ac0241aa781847eb8[…]java/io/cloudquery/internal/servers/plugin/v3/PluginServer.java)
