Added the ability to insert a custom template with a custom url redirect

[ilrey]

This pull request introduces new functionality to enhance the phishing tool.

Changes Made:

Custom Template Integration:

Added a new directory named custom under the .sites folder.

• Included a customizable HTML template (login.html) in this directory. Users can modify this template to personalize the appearance of the phishing page.

Custom URL Redirect:

• Updated the Bash script with a function that allows users to specify a custom URL. After a successful phishing attempt, users will be redirected to this specified URL.

Benefits:

• Customization: Enhances the ability to tailor the phishing page to specific needs, providing a more realistic simulation.
• Redirect Flexibility: Allows for redirection to a designated URL post-login, useful for educational demonstrations.

Please review the changes and let me know if there are any questions or further modifications needed.