feat: update bar height configuration and bar visibilty on fullscreen

modules/bar/Bar.qml

@@ -9,13 +9,12 @@ PanelWindow {
     id: panel
 
     color: "transparent"
-    visible: Hyprland.monitorFor(screen).activeWorkspace.hasFullscreen
 
     anchors.top: true
     anchors.left: true
     anchors.right: true
 
-    implicitHeight: Math.floor(screen.height * Config.barHeightRatio(screen.height))
+    implicitHeight: Config.barHeight(screen.height)
 
     exclusiveZone: height // this is so context menus don't clip into the bar