Mountpoints cannot include whitespace

[jandubois]

Description

Lima does not support mounting locations containing whitespace, e.g.

mounts:
- location: "~/foo bar"
  writable: true

This obviously affects users whose host username contains a space.

Known problem spots:

• lima.env does not quote LIMA_CIDATA_MOUNTS_NNN_MOUNTPOINT
• reversesshfs.Prepare doesn't quote the argument to mkdir -p
• reversesshfs.Start doesn't quote the local and remote path arguments to sshfs

There are probably more...