WSL 2 alternative to SFTP Net Drive using SSHFS

[aryarm]

WSL 2 ships with FUSE support! Thus, in theory, it should be possible to use SSHFS on WSL 2 to mount a remote, ssh-accessible directory as a drive in Windows. This could serve as a replacement to SFTP Net Drive on Windows.

Unfortunately, there is a specific set of options that must be passed to sshfs when mounting a directory. In addition, users of sshfs will need to execute a couple cleanup commands to ensure the directory is correctly detached upon exit.
It would be great if we could create a function/alias that would do all of this for us automatically...

[aryarm]

Ok, I made a first attempt. The code is in commit 781d0f3

Still to do:

• warn the user that they have to enable the user_allow_other config option in /etc/fuse.conf
• handle cases where that directory already exists
  You could create an argument for the dir name
• test it with hostnames that aren't already present in the user's ssh config (or handle that case somehow)
• handle sshfs (or ssh?) not being installed
• consider merging the sshopen command with the regular open command? (related to wsl open cmd overrides default open cmd #90)
  • Actually, on second thought, I think it would be better to keep them separate, so that we can replace or remove the regular open command in the future
• test the sshfs options and make sure they're how you want them
  • namely, there seem to be some problems with how often things are synced with the remote server. So we should make that happen more frequently
• document somewhere that after executing the command, users will need to open the mounted directory in windows file manager themselves
• consider changing the arguments so that sshopen becomes more of a wrapper around sshfs, exposing all of its functionality to the user
  • update 8/21: I'm thinking that this will require too many changes to the code at this point; so let's just leave it as it is for now
• perform everything within a subshell, so that we can tear things down when the subshell exits instead of the terminal's exit
  • update 8/21: actually, I've kinda liked the idea of exiting with the terminal, tbh - and it's gonna be a lot easier than trying to create a subshell
• don't automatically cd into the mount