[FEATURE REQUEST] Add keyboard shortcut to call/close WingetUI

## Before submitting the issue

- [x] **I have checked that the requested feature is not a duplicate or, if it is, it needs to be reopened**
- [x] **I have checked that I am running the latest version of WingetUI**
- [x] **I have checked the [FAQ](https://github.com/martinet101/WingetUI#faq) section**
- [x] **I have read the [contributing guidelines](https://github.com/marticliment/WingetUI/blob/main/CONTRIBUTING.md#feature-requests) and I agree with the [Code of Conduct](https://github.com/marticliment/WingetUI/blob/main/CODE_OF_CONDUCT.md)**

## Is your feature request related to a problem? Please describe.

I don't like to always have to open the system tray icon and click at the WingetUI icon to open the app.

## Describe the solution you'd like

Add a setting to set a custom keyboard shortcut to call/close WingetUI app. Additionally, would be cool at the shortcut setting to be able to set the tab that will open within the app (Discover packages, Software Updates or Installed packages) or maybe a shortcut to each one🤔(Devs decision).
Also, would be pretty helpful if when you open the app using the keyboard shortcut it automatically focus at the search entry, that way will make the app easier and faster to use.

Default keyboard shortcut suggestion: ctrl+alt+w