Remove unused components and models for improved maintainability

- Deleted redundant components (`AddActionButton`, `AlertBox`, `AlertStack`, `BackButton`, `CancelButton`, and `CollapsableArea`) and related files.
- Removed unused models (`Book`, `BookSerie`, `BookTables`, `Character`, and `Chapter`) to reduce codebase clutter.
- Updated project structure and references to reflect these removals.

context/BookContext.ts

@@ -1,13 +1,13 @@
 import {Context, createContext, Dispatch, SetStateAction} from "react";
-import {BookProps} from "@/lib/models/Book";
+import {BookProps} from "@/lib/types/book";
 
 export interface BookContextProps {
     book: BookProps | null,
-    setBook?: Dispatch<SetStateAction<BookProps | null>>
+    setBook: Dispatch<SetStateAction<BookProps | null>>
 }
 
 export const BookContext: Context<BookContextProps> = createContext<BookContextProps>({
     book: null,
-    setBook: () => {
+    setBook: (): void => {
     }
 })