feat: automatically focus the search bar + hotkey to focus the search bar

[Zamiell]

From the Windhawk home screen, I think that the first thing that most people will want to do is to focus the search bar so that they can begin typing for the thing that they want. However, it seems that the only way to do this is to move the mouse and click on the search bar. Using the mouse is not good, especially because you will have to move your hands off of the mouse immediately after clicking it in order to start typing.

Thus, I propose that when Windhawk opens, it automatically focuses the search bar. Furthermore, I propose that if the search bar is not focused, the "/" hotkey will focus the search bar, which is idiomatic in computing (e.g. Algolia search, npmjs.com).

I can try to submit a PR if needed.

[m417z]

Good idea, I'll add it in the next update. For now, you can see it in action on the website:
https://windhawk.net/mods

[Zamiell]

The hotkey works but it looks like the automatic focus is not working.

[m417z]

Done.