Introduce a web frontend for `testssl.sh` as a standalone `Web Security` utility

[azasypkin]

Summary

https://github.com/drwetter/testssl.sh is a powerful open-source tool that enables testing TLS/SSL encryption from anywhere. It would be fantastic to offer Secutils.dev users a way to access it through the Secutils.dev interface, leveraging the existing tracking and notification functionality.

NOTE TO IMPLEMENTER: See https://github.com/jauderho/dockerfiles/blob/main/testssl.sh/Dockerfile and testssl/testssl.sh#2085