Reorganize folder structure with consistent Views/ViewModels/Components pattern

Camera:
- Views/: ContentView, CustomCameraScreen, PhotoReviewView
- Components/: All UI components (buttons, overlays, controls)

Settings:
- Views/: SettingsView, AppLicensesView
- ViewModels/: SettingsViewModel + extensions
- Components/: ColorPresetButton, CustomColorPickerButton

Paywall:
- Views/: ProPaywallView

Shared:
- Theme/: SelfieCamTheme, DesignConstants, BrandingConfig
- Extensions/: Color extensions (moved Color+Extensions here)

SelfieCam/Features/Camera/Views/ContentView.swift

@@ -1,9 +1,14 @@
+//
+//  ContentView.swift
+//  SelfieCam
+//
+//  Main camera view - coordinates camera session, settings, and photo capture flow.
+//
+
 import SwiftUI
 import MijickCamera
 import Bedrock
 
-
-
 struct ContentView: View {
     @State private var settings = SettingsViewModel()
     @State private var premiumManager = PremiumManager()