SSH Jump Server With Private Key From Remote Server

**Is your feature request related to a problem? Please describe.**
I'm always frustrated when I need to connect to a database on server B through server A due to access restrictions. Although I can SSH into server A and then into server B using a config file without a password, I'm unable to use the Jump servers feature to connect directly to server B with the necessary private key.

**Describe the solution you'd like**
I would like the ability to use SSH jump servers while specifying a private key that exists on the remote server (server A) to connect to another server (server B). This would streamline the process and eliminate the need for manual SSH commands or complex workarounds.


**Additional context**
- https://github.com/orgs/dbeaver/discussions/34664