Add external domains for databases

What problem will this feature address?

Adding external domains for databases will allow multiple databases to be exposed publicly on the same port. Currently only 1 db can be exposed on a port as the external address uses the ip address. This will also help with ergonomics so people aren't juggling a bunch of postgres instances with different port numbers and no other naming. This is also a feature supported by CapRover.

Describe the solution you'd like

A domain tab exactly like the applications domain tab.

Describe alternatives you've considered

Current workaround is to assign different ports for each db or use the AI tool to create the db as a compose application. Personally I recommend just setting up databases as regular application.

Additional context

No response

Will you send a PR to implement it?

No

Start by locating the existing application domain tab and the database configuration and exposure entry points in the repository. Compare how application domains are represented with the current database IP and port handling, then verify that multiple databases can use domain-based external addresses without requiring distinct ports.