feat: Add berries_per_focus_minute option in GameConfig (#63)

src/features/config/components.rs

@@ -11,6 +11,7 @@ pub struct GameConfig {
     pub shovel_rate: f32,
     pub berry_seeds: Vec<BerrySeedConfig>,
     pub wonder_event_url: String,
+    pub berries_per_focus_minute: u32,
 }
 
 #[derive(Deserialize, Debug, Clone)]
@@ -54,6 +55,7 @@ impl Default for GameConfig {
                 },
             ],
             wonder_event_url: "wss://pomomon.farm/ws".into(),
+            berries_per_focus_minute: 1,
         }
     }
 }