Add support for bind mount and mknod dev/file mapper

The jailer currently supports a naive approach to sharing files in its root drive which is hard linking. We want to move away from this and support bind mounting of files and running mknod on devices

Start by tracing the jailer’s current hard-linking approach for sharing files in the root drive. Then investigate the project’s jailer integration points for bind mounting files and running mknod on devices. Done means the jailer supports both requested sharing mechanisms without relying on the naive hard-link approach.

Written by the indexing model from the issue text.