Stubbed out buttons and menu view states

src/menu.rs

@@ -1,5 +1,5 @@
 use bevy::{
-    color::palettes::css::{BLACK, ORANGE, PURPLE, RED, TEAL},
+    color::palettes::css::{BLACK, BLUE, GREEN, ORANGE, PURPLE, RED, TEAL},
     prelude::*,
 };
 
@@ -53,6 +53,18 @@ fn setup(mut commands: Commands) {
                     parent.spawn(Text("Menu".to_string()));
                 })
                 .observe(button_set_state(ViewState::Menu));
+            parent
+                .spawn((Button, BackgroundColor(GREEN.into()), GlobalZIndex(1)))
+                .with_children(|parent| {
+                    parent.spawn(Text("Deck".to_string()));
+                })
+                .observe(button_set_state(ViewState::Deck));
+            parent
+                .spawn((Button, BackgroundColor(BLUE.into()), GlobalZIndex(1)))
+                .with_children(|parent| {
+                    parent.spawn(Text("Sets".to_string()));
+                })
+                .observe(button_set_state(ViewState::Sets));
         });
 }