refactor Search

- have a separate body view for each os
- macOS: set navigation title for search
- macOS: set min width to 835 for main content
- macOS: set main window min height to 600
- macOS: don’t have text behind the cancel button
- split SearchTextField into macOS and iOS/tvOS
- iOS: move search menu to the right
- iOS: unified search field
- make min width a constant
- add option to disable search suggestions

Signed-off-by: Toni Förster <toni.foerster@gmail.com>

Shared/Videos/VerticalCells.swift

@@ -52,7 +52,7 @@ struct VerticalCells<Header: View>: View {
         .edgesIgnoringSafeArea(edgesIgnoringSafeArea)
         #if os(macOS)
             .background(Color.secondaryBackground)
-            .frame(minWidth: 360)
+            .frame(minWidth: Constants.contentViewMinWidth)
         #endif
     }