Feat: reset command

[Xieyt]

This PR:

• Introduces reset command
• Internally this command reset the db of bench site and install all backend installed apps using bench reinstall command.

Command: fm reset <benchname>
Flags:

• --admin-password (optional): Admin password

Command Flow/Process:

1. Retrieve the admin password in the following order:
   • Use the --admin-password flag if provided.
   • Check the admin_password key in site_config.json.
   • Check the admin_password key in common_site_config.json.
   • Prompt the user for the admin password if not found in the above sources.
2. Reset the bench site using the obtained admin password.
3. Save the admin_password to site_config.json