feat(hyprland/workspaces): add deduplication and max-icons option to workspace-taskbar

[whymusticode]

I 1) don't want duplicates and 2) go back and forth between my 13" laptop screen (where I really need the taskbar because I'm putting everything on a different workspace) and my 49" screen (where 10 things might end up in only one workspace and now the taskbar is a pointless eyesore)

Summary

• Adds option to configuration
• Automatically deduplicates icons by window class before applying the limit
• Set to 0 (default) for unlimited icons

Configuration Example

"hyprland/workspaces": {
    "format": "{windows}",
    "workspace-taskbar": {
        "enable": true,
        "max-icons": 2
    }
}