refactor(BlockSelectionState): Refactored so selection of blocks in 2x2 grids is more intuitive and added left() and right() methods to aid this effort.

src/handlers/radarr_handlers/library/library_handler_tests.rs

@@ -375,7 +375,7 @@ mod tests {
       );
       assert_eq!(
         app.data.radarr_data.selected_block.blocks,
-        &DELETE_MOVIE_SELECTION_BLOCKS
+        DELETE_MOVIE_SELECTION_BLOCKS
       );
     }