New extension: System tray manager

[github-actions]

Description

Send your app to the system tray when initializing the icon inside your project. This can be useful for things like:

• Creating a launcher that has to do processes in the background.
• Creating a tray icon for your app to replace the big icon on the taskbar when minimized, to simulate experiences like "desktop pets".
• Literally anything you ever dreamed of creating a tray icon for.

It currently supports a "Show" label with customizable text, a "Quit" label with customizable text, and a fully custom third label, used for passing your own string into a scene variable called "TrayAction". Then, use that variable to trigger any events in your project.

Here's a demonstration in an exported demo:

Demo.mp4

How to use the extension

Also, here's a quickstart:

How.to.use.mp4

Checklist

• I've followed all of the best practices.
• I confirm that this extension can be integrated to this GitHub repository, distributed and MIT licensed.
• I am aware that the extension may be updated by anyone, and do not need my explicit consent to do so.

Example file

System tray manager example.zip

Extension file

SystemTrayManager.zip

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Extension by @Daveee19

You can update the extension on this "Pull Request" by commenting the update command: in the comment field, type !update, then drag and drop a zip file with your extension file in the commenting field, like how you initially submitted the extension. It should look like this:

!update [MyExtension.zip](https://github.com/GDevelopApp/GDevelop-extensions/files/12709661/MyExtension.zip)

It can take a few seconds for the file to fully upload and show as the above. Once it is like shown above, click "Comment" and let the bot do the rest!