feat: implement ipWhitelistUserLogin Plugin

[Pro]

This plugin allows to limit user login for specific users to a specific list of IP addresses.

1. If a user is not listed in the configuration, the login is not restricted, and it is the default as it would be without using this plugin
2. The configuration allows to specify for a specific username the allowed IP address and the Group to be assigned when logging in.
3. If a user is listed in the configuration, all given IP addresses are checked. This is a simple 'starts With' check.
   1. If the IP address is not included in the list, the User Login is prevented
   2. If the IP address is in the list, the User gets assigned the given Group (if it exists), and can log in

Based on the idea given here:
https://www.jfrog.com/jira/browse/RTFACT-9157

[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅