add Miniplayer, ActiveWorkoutSession skeleton

WorkoutsPlus/ActiveWorkout/ActiveWorkoutSession.swift

@@ -0,0 +1,60 @@
+//
+//  ActiveWorkout.swift
+//  WorkoutsPlus
+//
+//  Created by Felix Förtsch on 07.09.24.
+//
+
+import SwiftUI
+
+struct ActiveWorkoutSession: View {
+		@Environment(\.dismiss) private var dismiss
+		
+		@State var workout: Workout
+		
+		@State var workoutSession: WorkoutSession?
+		@State var currentExercise: Int = 0
+		
+		let startDate = Date() - 100
+		
+		@State private var currentTime = Date()
+		let timer = Timer.publish(every: 1, on: .main, in: .common).autoconnect()
+		
+    var body: some View {
+						Button("Close") { dismiss() }
+						Text("\(workout.name)")
+						Text("Elapsed Time: \(elapsedTimeText(startDate: startDate))")
+								.onReceive(timer) { time in
+										currentTime = time // Updates the current time every second
+								}
+						List {
+								// TODO: Unwrap Sets
+								ForEach(workout.workoutItems) { workoutItem in
+										HStack {
+												Text("\(workoutItem.reps)")
+												Text("\(workoutItem.name)")
+										}
+								}
+						}
+						.listStyle(.plain)
+						Image(systemName: "play.circle.fill")
+								.resizable()
+								.frame(width: 100, height: 100)
+								.font(.title)
+								.symbolRenderingMode(.palette)
+								.foregroundStyle(.white, .green)
+
+    }
+		
+		private func elapsedTimeText(startDate: Date) -> String {
+				let elapsedTime = currentTime.timeIntervalSince(startDate)
+				let formatter = DateComponentsFormatter()
+				formatter.allowedUnits = [.hour, .minute, .second]
+				formatter.unitsStyle = .positional // For HH:mm:ss format
+				return formatter.string(from: elapsedTime) ?? "00:00:00"
+		}
+}
+
+#Preview {
+		ActiveWorkoutSession(workout: Workout.sampleData)
+}