Remove CharacterComponent and CharacterDetail components

- Deleted `CharacterComponent` and `CharacterDetail` files from the project.
- Refactored related logic to improve code maintainability and reduce redundancy.

shared/interface.ts

@@ -13,4 +13,6 @@ export interface FormResponse {
 export interface SelectBoxProps {
     label: string;
     value: string;
-}
+}
+
+export type ViewMode = 'list' | 'detail' | 'edit';