Umbrel home cloud integration

### Describe the problem

I have an existing Umbrel (https://umbrel.com/) home cloud running on Raspberry Pi 5. I can easily spin up a dockerized Weblate instance on it but since Umbrel can run and manage 3rd party apps (dockerized) it makes sense to integrate it directly. Plus there is an issue with rebooting where even if I set Weblate to always restart, Umbrel will kill it when it's starting its own containers and I have to start Weblate manually anyway. I solved this by having a startup script with a delay, but that's a bit of a hack.

### Describe the solution you would like

I would like to have Weblate integrated with Umbrel store (https://apps.umbrel.com/) which will allow one click install and management.

This would require setting the env variables (such as smtp and others) via UI, since users wouldn't interact the YAML files at all. AFAIK there's no such ui? It would need to be built?

### Describe alternatives you have considered

_No response_

### Screenshots

_No response_

### Additional context

_No response_