Add new plugin: Wallpaper switcher

wallpaper-switcher/README.md

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+# Wallpaper Switcher
+
+This plugin switches to the next wallpaper in the selected wallpaper catalogue in
+Noctalia settings.
+The wallpaper can be switched by clicking on a bar widget or a control-center
+shortcut tile.
+
+## Plugin
+
+| Field | Value |
+| --- | --- |
+| ID | `kavya-nama/wallpaper-switcher` |
+| Entries | Bar widget: `switch`; control-center shortcut: `switch-shortcut` |
+
+## Requirements
+
+No external dependencies.
+
+## Usage
+
+Add the widget to bar using Noctalia GUI, click on the widget to switch wallpaper.
+The control-center shortcut can be added from the control-center shortcuts
+settings.

wallpaper-switcher/plugin.toml

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+id = "kavya-nama/wallpaper-switcher"
+name = "Wallpaper Switcher"
+version = "1.0.0"
+plugin_api = 3
+author = "kavya-nama"
+license = "MIT"
+icon = "image"
+description = "Switch to the next wallpaper from a bar widget."
+tags = ["bar", "shortcut", "wallpaper"]
+dependencies = []
+
+[[widget]]
+id = "switch"
+entry = "widget.luau"
+
+[[shortcut]]
+id = "switch-shortcut"
+entry = "shortcut.luau"

wallpaper-switcher/shortcut.luau

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+function onClick()
+	noctalia.runAsync("noctalia msg wallpaper-next")
+	noctalia.notify("Wallpaper Switch", "Wallpaper switched")
+end
+
+shortcut.setLabel("Next Wallpaper")
+shortcut.setIcon("image")

wallpaper-switcher/translations/en.json

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+{}

wallpaper-switcher/widget.luau

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+function update()
+	barWidget.setGlyph("image")
+end
+
+function onClick()
+	noctalia.runAsync("noctalia msg wallpaper-next")
+	noctalia.notify("Wallpaper Switch", "Wallpaper switched")
+end