dankbar: support multiple bars and per-display bars

- Migrate settings to v2
  - Up to 4 bars
  - Per-bar settings instead of global

quickshell/Modules/Plugins/PluginPopout.qml

@@ -13,14 +13,6 @@ DankPopout {
     property real contentWidth: 400
     property real contentHeight: 0
 
-    function setTriggerPosition(x, y, width, section, screen) {
-        triggerX = x
-        triggerY = y
-        triggerWidth = width
-        triggerSection = section
-        triggerScreen = screen
-    }
-
     popupWidth: contentWidth
     popupHeight: contentHeight
     screen: triggerScreen