Add support for form / user input for app configuration

[al-lac]

Current Limitations in App Installation and Configuration

When installing an app, you're often limited to the default options set by the app maintainer. While you can sometimes change these options within the app itself, most of the time you're stuck with them. Additionally, if you modify settings via the terminal, these changes may be reset when you update the app.

User Input During Installation

By prompting the user for input during the installation process, default credentials could be avoided. Some apps may also require specific input—for example, the location or name of a Zigbee adapter.

Enhanced Settings Menu

It would be helpful to have a settings menu for every app that supports it, allowing users to change settings defined in an .env file or elsewhere. For instance, some apps have registration enabled by default. Changing this setting isn't really possible right now, and exposing the app on the internet without the ability to modify such settings is not a good idea.