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/form/ToggleWithConfirmation.tsx

@@ -1,7 +1,7 @@
 'use client'
 import React, {useState} from "react";
 import ToggleSwitch from "@/components/form/ToggleSwitch";
-import AlertBox, {AlertType} from "@/components/AlertBox";
+import AlertBox, {AlertType} from "@/components/ui/AlertBox";
 
 interface ToggleWithConfirmationProps {
     checked: boolean;
@@ -15,17 +15,17 @@ interface ToggleWithConfirmationProps {
 }
 
 export default function ToggleWithConfirmation({
-    checked,
-    onChange,
-    alertTitle,
-    alertMessage,
-    alertType,
-    confirmText = "Activer",
-    cancelText = "Annuler",
-    disabled = false
-}: ToggleWithConfirmationProps) {
+                                                   checked,
+                                                   onChange,
+                                                   alertTitle,
+                                                   alertMessage,
+                                                   alertType,
+                                                   confirmText = "Activer",
+                                                   cancelText = "Annuler",
+                                                   disabled = false
+                                               }: ToggleWithConfirmationProps) {
     const [showAlert, setShowAlert] = useState<boolean>(false);
-
+    
     function handleToggle(newChecked: boolean): void {
         if (newChecked) {
             setShowAlert(true);
@@ -33,20 +33,20 @@ export default function ToggleWithConfirmation({
             onChange(false);
         }
     }
-
+    
     async function handleConfirm(): Promise<void> {
         onChange(true);
         setShowAlert(false);
     }
-
+    
     function handleCancel(): void {
         setShowAlert(false);
     }
-
+    
     return (
         <>
             <ToggleSwitch checked={checked} onChange={handleToggle} disabled={disabled}/>
-
+            
             {showAlert && (
                 <AlertBox
                     title={alertTitle}