Introduce initial UI for connecting to networks

Apple/App/FloatingButtonStyle.swift

@@ -0,0 +1,50 @@
+import SwiftUI
+
+struct FloatingButtonStyle: ButtonStyle {
+    static let duration = 0.08
+
+    var color: Color
+    var cornerRadius: CGFloat
+
+    func makeBody(configuration: Configuration) -> some View {
+        configuration.label
+            .font(.headline)
+            .foregroundColor(.white)
+            .frame(minHeight: 48)
+            .padding(.horizontal)
+            .background(
+                RoundedRectangle(cornerRadius: cornerRadius)
+                    .fill(
+                        LinearGradient(
+                            colors: [
+                                configuration.isPressed ? color.opacity(0.9) : color.opacity(0.9),
+                                configuration.isPressed ? color.opacity(0.9) : color
+                            ],
+                            startPoint: .init(x: 0.2, y: 0),
+                            endPoint: .init(x: 0.8, y: 1)
+                        )
+                    )
+                    .background(
+                        RoundedRectangle(cornerRadius: cornerRadius)
+                            .fill(configuration.isPressed ? .black : .white)
+                    )
+            )
+            .shadow(color: .black.opacity(configuration.isPressed ? 0.0 : 0.1), radius: 2.5, x: 0, y: 2)
+            .scaleEffect(configuration.isPressed ? 0.975 : 1.0)
+            .padding(.bottom, 2)
+            .animation(
+                configuration.isPressed ? .easeOut(duration: Self.duration) : .easeIn(duration: Self.duration),
+                value: configuration.isPressed
+            )
+    }
+}
+
+extension ButtonStyle where Self == FloatingButtonStyle {
+    static var floating: FloatingButtonStyle {
+        floating()
+    }
+
+    static func floating(color: Color = .accentColor, cornerRadius: CGFloat = 10) -> FloatingButtonStyle {
+        FloatingButtonStyle(color: color, cornerRadius: cornerRadius)
+    }
+}