Enhance UI

- Updated lineup data with new player names.
- Added `ButtonGroup` for better organization of game controls.
- Modified `GameStateDisplay` to use a `<section>` for better semantic structure.
- Adjusted table sizes and lineup section styling for a more compact display.
- Improved button styles, including specialized buttons for unique actions (e.g., home run, double play).
- Updated CSS variables for color values and added layout refinements for better responsiveness.
- Modified `index.html` theme color to match app's new design scheme.

public/index.html

@@ -4,7 +4,7 @@
     <meta charset="utf-8" />
     <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
-    <meta name="theme-color" content="#000000" />
+    <meta name="theme-color" content="#FAF9F6" />
     <meta
       name="description"
       content="Web site created using create-react-app"