新功能：添加了一些快捷键

ChuanhuWallpaper/Components/SaveButton.swift

@@ -24,6 +24,7 @@ struct SaveButton: View {
         .alert(isPresented: $showErrorMessage) {
             Alert(title: Text("An Error Occured"), message: Text(errorMessage), dismissButton: .cancel())
         }
+        .keyboardShortcut("s")
     }
 
     private func save() {

ChuanhuWallpaper/ContentView.swift

@@ -49,6 +49,7 @@ struct ContentView: View {
                                 .foregroundColor(.red)
                         }
                     }
+                        .keyboardShortcut(KeyEquivalent.escape, modifiers: [])
                         .offset(x: wallpapers.isEmpty ? 200 : 0)
                         .animation(.spring(), value: wallpapers)
                     , alignment: .trailing

ChuanhuWallpaper/View/WallpaperPlaceholderCell.swift

@@ -63,6 +63,7 @@ struct WallpaperPlaceholderCell: View {
         } label: {
             Text("Choose Photo(s)...").fixedSize(horizontal: false, vertical: true)
         }
+        .keyboardShortcut("i")
     }
 }