[Feature Request] Send to System Tray

**Is your feature request related to a problem? Please describe.**
It's more an annoyance than a problem. I get really tired of seeing the bot open on my taskbar and wish I could hide it.

**Describe the solution you'd like**
I'd like to have the option of showing the program running in the system tray rather than the taskbar.

**Describe the basic flow/steps of using this feature**
How this feature would be used:
1. Press X to close program
2. Program asks if you really want to close or instead send to system tray
3. Option to save preference in config

**Additional context**
I don't really know if you have any interest in doing something like this. Either way, appreciate you taking the time to read this and thanks for the bot.

No files, tests, or entry points are named in the issue. Start by locating the desktop window's close handling and configuration persistence; done means closing can offer system-tray placement, the preference can be saved, and the program no longer appears on the taskbar when that option is selected.

Written by the indexing model from the issue text.