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.

components/book/SearchBook.tsx

@@ -1,8 +1,6 @@
-import {faSearch} from "@fortawesome/free-solid-svg-icons";
-import {FontAwesomeIcon} from "@fortawesome/react-fontawesome";
-import {ChangeEvent, Dispatch, SetStateAction} from "react";
-import {useTranslations} from "next-intl";
-import TextInput from "@/components/form/TextInput";
+import {Search} from 'lucide-react';
+import React, {ChangeEvent, Dispatch, SetStateAction} from "react";
+import {useTranslations} from '@/lib/i18n';
 
 export default function SearchBook(
     {
@@ -15,20 +13,16 @@ export default function SearchBook(
     const t = useTranslations();
 
     return (
-        <div className="flex items-center relative my-5 w-full max-w-3xl">
-            <div className="relative flex-grow">
-                <div className="relative">
-                    <FontAwesomeIcon icon={faSearch}
-                                     className="absolute left-4 top-1/2 transform -translate-y-1/2 text-primary w-5 h-5 pointer-events-none z-10"/>
-                    <div className="pl-11">
-                        <TextInput
-                            value={searchQuery}
-                            setValue={(e: ChangeEvent<HTMLInputElement>) => setSearchQuery(e.target.value)}
-                            placeholder={t("searchBook.placeholder")}
-                        />
-                    </div>
-                </div>
-            </div>
+        <div
+            className="flex items-center gap-3 w-full max-w-3xl bg-secondary rounded-xl px-4 py-2.5 border border-secondary hover:bg-gray-dark hover:border-gray-dark focus-within:border-primary focus-within:ring-4 focus-within:ring-primary/20 transition-all duration-200">
+            <Search className="text-muted w-4 h-4 flex-shrink-0" strokeWidth={1.75}/>
+            <input
+                type="text"
+                value={searchQuery}
+                onChange={(e: ChangeEvent<HTMLInputElement>): void => setSearchQuery(e.target.value)}
+                placeholder={t("searchBook.placeholder")}
+                className="w-full bg-transparent text-text-primary text-sm placeholder:text-muted outline-none"
+            />
         </div>
     )
 }