Add option to set password for user (not for config file)

[vitonsky]

Checklist

• I read the README
• I read the FAQ
• I searched the issues
• My issue is about the script, and not OpenVPN itself

Is your feature request related to a problem? Please describe.
I need to give access to VPN to my friends, but sometime i want disable access for them and enable after some time.
I need to use passwords, to give them one ovpn file and change password when i want and send them new password later.
When i use this script, i can't setup password for user.

I found issue about this #200 but its closed.
I can't use this script without this feature due to security reasons.

Describe the solution you'd like
Implement option to set password for each user. Not for config, but for user. For example, to when i try to use ovpn file in kde connector, i'll have to enter username and password.

Describe alternatives you've considered
At this time i can only recreate users each time, it is unacceptable and make this script useless for my purposes

Additional context
This feature would make configurations more flexible

[benmotyka]

+1

[ja49619]

Do you understand how you can set a password for a client?