Refactor builder store and remove wall store

Refactor builder store and remove wall store

- Consolidated wall-related state management into the builder store by removing the useWallStore.
- Added new properties and setters for wall attributes (thickness, height, materials) in the builder store.
- Introduced SelectedWallProperties and WallProperties components for managing wall properties in the sidebar.
- Created a new floor store for managing floor-related state.
- Added a wall asset store for managing wall assets.
- Implemented a zone store for managing zones and their properties.
- Updated sidebar styles for better layout and appearance.

app/src/modules/builder/builder.tsx

@@ -276,7 +276,7 @@ export default function Builder() {
                 <LayoutImage />
             </Bvh>
 
-            {/* <WallGroup /> */}
+            <WallGroup />
         </>
     );
 }