Allow "altis.dev" TLD to be configured

[PriyaBhatia0210]

In order to support GitHub Codespaces we need to be able to configure the TLD for Local Server. In addition we need to be able to easily provision and manage self signed certificates in addition to supplying the cert for *.altis.dev.

Things to note:

• Altis now enforces HSTS by default so we either need to switch it off for codespaces or ensure self signed certificates are setup prior to start Local Server
• Certs have to be mounted on the nginx and traefik containers to function, so need to be setup before Local Server starts

#237

[garethwelton]

This ticket needs some more detail and probably to be broken down into several issues.
@shadyvb Can you add some questions to this to get it defined. @wisyhambolu will look into the PR listed above

[shadyvb]

I think the linked PR answers all the questions I had about the purpose of the issue here. And also includes the progress and remaining tasks.

Basically we're at the point where a custom TLD works but we still need to automatically generate the self-signed cert using mkcert.