feat(ui): replace loading indicators with Apple-style LoadingSpinner

- Add LoadingSpinner component with small/medium/large sizes using system gray color
- Add LoadingPlaceholder for skeleton loading states
- Add LoadingSheet for full-screen blocking overlays
- Replace ThemedSpinner/ThemedSpinnerCompact across all views
- Remove deprecated loading components from AnimatedComponents.swift
- Delete LoadingTextGenerator.swift
- Fix PhotoImportView layout to fill full width

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

SportsTime/Features/Progress/Views/GamesHistoryView.swift

@@ -14,7 +14,7 @@ struct GamesHistoryView: View {
                     selectedVisit: $selectedVisit
                 )
             } else {
-                ProgressView("Loading games...")
+                LoadingSpinner(size: .medium, label: "Loading games...")
             }
         }
         .navigationTitle("Games Attended")