Expand uses

[NuckChorris]

An askpass application is potentially useful in many situations besides unlocking your SSH keys. For example, the following:

• SSH password login
• OTP entry (if we limit it to 6 characters and numbers only)
• sudo entry
• password saving

Perhaps it would be wise to move the binary to /usr/bin/undesktop-askpass (with symlinks in /usr/bin/askpass and /usr/local/ssh/ssh-askpass) instead of the current /usr/local/ssh/undesktop-ssh-askpass

Is this worth the trouble and the weird file locations? Would anyone even use this feature? What purpose does it have relative to, say, password inputs in a larger application? If we move the password input class to a separate project (Undesktop/Utilities?) would this still be worth pursuing?