Allow configuring taskbar item click actions

[Diagon]

Pull Request

Motivation

Allow to change default action on click of left/middle/right button for taskbar items.

Type of Change

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• Bug fix
• New feature
• Breaking change
• Refactoring

Related Issue

• Closes #(issue number) (if any)

Testing

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• Tested on niri
• Tested on Hyprland
• Tested on sway
• Tested with different bar positions and density settings
• Tested at different interface scaling values
• Tested with multiple monitors (if applicable)

Screenshots / Videos

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Checklist

• Code follows project style guidelines
• Self-reviewed my code
• No new warnings or errors
• Documentation or comments updated (if relevant)

Additional Notes

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[ItsLemmy]

Don't see a good reason to merge it. This just add unnecessary complexity. IMO this is the responsability of the .desktop file to declare proper extra actions.