Feature: Add self-signed certificate by default to NGINX front-end on TCP 443

Feature description

Right now, when I deploy Infisical with Docker Compose, and access the HTTPS port, I get a "connection reset" error. Instead, a self-signed certificate should be bound to the HTTPS port, by default.

Why would it be useful?

This provides a better UX than throwing an error. Self-signed certificates are also better than using unencrypted HTTP ports.