refactor(quickshell): drop the Persona names from the primitives

P5Panel, P5Button, P5Slider and P5Tooltip become Panel, ActionButton,
LevelSlider and Tooltip. ActionButton and LevelSlider avoid clashing
with QtQuick.Controls, which the ask panel imports.

quickshell/popouts/AudioPopout.qml

@@ -50,7 +50,7 @@ Popout {
                 width: parent.width
                 spacing: Theme.padS
 
-                P5Button {
+                ActionButton {
                     id: outputMuteButton
                     width: parent.width
                     text: Audio.muted ? "Unmute output" : "Mute output"
@@ -58,7 +58,7 @@ Popout {
                     onClicked: Audio.toggleMute()
                 }
 
-                P5Button {
+                ActionButton {
                     width: parent.width
                     text: "Open audio mixer"
                     icon: "󰕾"
@@ -178,7 +178,7 @@ Popout {
             }
         }
 
-        P5Slider {
+        LevelSlider {
             anchors.bottom: parent.bottom
             anchors.left: parent.left
             anchors.right: parent.right