feat: added tooltips to the missing elements and enabled accessibility on some not natively supported (#2321)

Kit/module/popup.swift

@@ -418,7 +418,7 @@ internal class HeaderView: NSStackView {
     fileprivate func setCloseButton(_ state: Bool) {
         if state && !self.isCloseAction {
             self.activityButton?.image = Bundle(for: type(of: self)).image(forResource: "close")!
-            self.activityButton?.toolTip = localizedString("Close popup")
+            self.activityButton?.toolTip = localizedString("Close")
             self.activityButton?.action = #selector(self.closePopup)
             self.isCloseAction = true
         } else if !state && self.isCloseAction {

Kit/module/settings.swift

@@ -496,7 +496,8 @@ private class WidgetPreview: NSStackView {
         self.layer?.backgroundColor = NSColor.white.cgColor
         
         self.identifier = NSUserInterfaceItemIdentifier(rawValue: type.rawValue)
-        self.toolTip = localizedString("Move widget", type.name())
+        self.setAccessibilityElement(true)
+        self.toolTip = type.name()
         
         self.orientation = .vertical
         self.distribution = .fill

Kit/plugins/Charts.swift

@@ -486,6 +486,8 @@ public class PieChartView: NSView {
         self.segments = segments
         
         super.init(frame: frame)
+        
+        self.setAccessibilityElement(true)
     }
     
     required init?(coder: NSCoder) {
@@ -575,6 +577,15 @@ public class HalfCircleGraphView: NSView {
     
     public var color: NSColor = NSColor.systemBlue
     
+    public override init(frame: NSRect) {
+        super.init(frame: frame)
+        self.setAccessibilityElement(true)
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
     public override func draw(_ rect: CGRect) {
         let arcWidth: CGFloat = 7.0
         let radius = (min(self.frame.width, self.frame.height) - arcWidth) / 2