Add an option to customize how notification popups are displayed. Currently, notification text can be too long and wraps to a second line, making the compact notification window less convenient.

The app should allow users to choose between two notification modes:

Compact mode: shows only the most important information selected by the user, such as download and upload speed, without extra details like total downloaded or uploaded data.

Full mode: shows the complete notification with all available information, similar to the current display.

This would make notifications more flexible and easier to read depending on the user's needs.

Proton notification: https://i.ibb.co/cc8qhhKm/Screenshot-20260630-100858-One-UI-Home.jpg
1DM notification settings example: https://i.ibb.co/TqbFWZ1B/Screenshot-20260630-101350-1-DM.jpg