fix: Pass resolved remote path to mount callbacks

Propagate the resolved remote path through 'authenticate_and_mount'
callbacks. This is crucial for features like 'live_grep' and 'live_find'
which depend on accurate, tilde-expanded paths for remote operations.

Changes:
- Updated 'lua/sshfs/lib/sshfs.lua' callback signatures and invocations.
- Adjusted 'lua/sshfs/session.lua' to utilize the 'resolved_path' for
connections and mount hooks.

Ref #8