[UX/Linux] Open main window when clicking the Tray icon

[arielj]

We were using the double-click event but that only works on Mac and Windows, not on Linux https://www.electronjs.org/docs/latest/api/tray#event-double-click-macos-windows

This PR changes the code to use click instead which works on all platforms.

Other electron apps like discord or slack work like this too.

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Use the following Checklist if you have changed something on the Backend or Frontend:

• Tested the feature and it's working on a current and clean install.
• Tested the main App features and they are still working on a current and clean install. (Login, Install, Play, Uninstall, Move games, etc.)
• Created / Updated Tests (If necessary)
• Created / Updated documentation (If necessary)

[Etaash-mathamsetty]

lgtm let me test

[Etaash-mathamsetty]

doesn't seem to work that well, prolly cuz click also opens context menu. double click works lmao, seems like that's the case for every application on gnome at least.

[flavioislima]

looks good