settings: add a link to the source code in plugin details (#3690)

* settings: add a link to the source code in plugin details

* style: remove unnecessary whitespace, add empty line

* show link to the plugin source instead of explanation

* fix: check for empty string instead of undefined

quickshell/Modules/Settings/PluginSettingsPage.qml

@@ -22,6 +22,7 @@ FocusScope {
     readonly property bool hasSettings: !!pluginData?.settings && !isDesktopPlugin
     readonly property bool isSystemPlugin: pluginData?.source === "system"
     readonly property string pluginName: pluginData?.name || pluginId
+    readonly property string pluginRepo: DMSService.installedPlugins.find(entry => entry.id === pluginId)?.repo ?? ""
     readonly property string requiresDms: pluginData?.requires_dms || ""
     readonly property bool meetsRequirements: requiresDms ? PluginService.checkPluginCompatibility(requiresDms) : true
     readonly property var permissions: Array.isArray(pluginData?.permissions) ? pluginData.permissions : []
@@ -239,6 +240,22 @@ FocusScope {
                 visible: subtitle !== ""
             }
 
+            SettingsRow {
+                iconName: "code"
+                title: I18n.tr("Plugin Source Code", "plugin settings page, plugin details")
+                subtitle: I18n.tr("Opens %1", "plugin settings page, plugin details, %1 is the link to the plugin source code").arg(root.pluginRepo)
+                clickable: true
+                visible: root.pluginRepo !== ""
+                onClicked: Qt.openUrlExternally(root.pluginRepo)
+
+                DankIcon {
+                    anchors.verticalCenter: parent.verticalCenter
+                    name: "open_in_browser"
+                    size: Theme.iconSizeMedium
+                    color: Theme.primary
+                }
+            }
+
             SettingsRow {
                 visible: root.permissions.length > 0
                 body: Flow {