feat: added a header with title and settings button to the portals (#1467)

Kit/module/portal.swift

@@ -14,3 +14,52 @@ import Cocoa
 public protocol Portal_p: NSView {
     var name: String { get }
 }
+
+public class PortalHeader: NSStackView {
+    private let name: String
+    
+    public init(_ name: String) {
+        self.name = name
+        
+        super.init(frame: NSRect.zero)
+        self.heightAnchor.constraint(equalToConstant: 20).isActive = true
+        
+        let title = NSTextField()
+        title.isEditable = false
+        title.isSelectable = false
+        title.isBezeled = false
+        title.wantsLayer = true
+        title.textColor = .textColor
+        title.backgroundColor = .clear
+        title.canDrawSubviewsIntoLayer = true
+        title.alignment = .center
+        title.font = NSFont.systemFont(ofSize: 12, weight: .regular)
+        title.stringValue = name
+        
+        let settings = NSButton()
+        settings.heightAnchor.constraint(equalToConstant: 18).isActive = true
+        settings.bezelStyle = .regularSquare
+        settings.translatesAutoresizingMaskIntoConstraints = false
+        settings.imageScaling = .scaleProportionallyDown
+        settings.image = Bundle(for: type(of: self)).image(forResource: "settings")!
+        settings.contentTintColor = .lightGray
+        settings.isBordered = false
+        settings.action = #selector(self.openSettings)
+        settings.target = self
+        settings.toolTip = localizedString("Open module settings")
+        settings.focusRingType = .none
+        
+        self.addArrangedSubview(title)
+        self.addArrangedSubview(NSView())
+        self.addArrangedSubview(settings)
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    @objc private func openSettings(_ sender: Any) {
+        self.window?.setIsVisible(false)
+        NotificationCenter.default.post(name: .toggleSettings, object: nil, userInfo: ["module": self.name])
+    }
+}