Add CoreData-based workout tracking app with iOS and watchOS targets

- Migrate from SwiftData to CoreData with CloudKit sync
- Add core models: Split, Exercise, Workout, WorkoutLog
- Implement tab-based UI: Workout Logs, Splits, Settings
- Add SF Symbols picker for split icons
- Add exercise picker filtered by split with exclusion of added exercises
- Integrate IndieAbout for settings/about section
- Add Yams for YAML exercise definition parsing
- Include starter exercise libraries (bodyweight, Planet Fitness)
- Add Date extensions for formatting (formattedTime, isSameDay)
- Format workout date ranges to show time-only for same-day end dates
- Add build number update script
- Add app icons

Workouts/ContentView.swift

@@ -2,26 +2,39 @@
 // ContentView.swift
 // Workouts
 //
-// Created by rzen on 8/13/25 at 11:10 AM.
+// Created by rzen on 8/13/25 at 11:10 AM.
 //
 // Copyright 2025 Rouslan Zenetl. All Rights Reserved.
 //
 
 
 import SwiftUI
+import CoreData
 
 struct ContentView: View {
+    @Environment(\.managedObjectContext) private var viewContext
+
     var body: some View {
-        VStack {
-            Image(systemName: "globe")
-                .imageScale(.large)
-                .foregroundStyle(.tint)
-            Text("Hello, world!")
+        TabView {
+            WorkoutLogsView()
+                .tabItem {
+                    Label("Workout Logs", systemImage: "list.bullet.clipboard")
+                }
+
+            SplitsView()
+                .tabItem {
+                    Label("Splits", systemImage: "dumbbell.fill")
+                }
+
+            SettingsView()
+                .tabItem {
+                    Label("Settings", systemImage: "gear")
+                }
         }
-        .padding()
     }
 }
 
 #Preview {
     ContentView()
+        .environment(\.managedObjectContext, PersistenceController.preview.viewContext)
 }