Introduce Toggleable Admin Tools(Mailhog and Adminer)

[Xieyt]

Description

• Move Adminer and Mailhog to different compose file.
• Make them toggle able as Admin tools.
• Provide command fm update --admin-tools <enable/disable>.
• Automatically enable Admin Tools for fm dev environment.

Enable Admin Tools Flow:

• Start both Adminer and Mailhog services.
• Include the respective location configurations for Adminer and Mailhog in Nginx and reload Nginx.
• Set Mailhog as the default mail server in bench common_site_config.json.
• Prompt the user to restart the Frappe server for the changes to take effect.

Disable Admin Tools Flow:

• Remove Nginx location configurations for Adminer and Mailhog and reload Nginx.
• Stop both Adminer and Mailhog services.
• Remove Mailhog as the default mail server from bench common_site_config.json if it exists.
• Prompt the user to Frappe restart the server if common_site_config.json is changed.