Add spell management to book settings

- Moved spell-related components to the `book/settings/spells` directory for better organization.
- Added "Spells" as a new tool in book settings and composer sidebar with localization support.
- Integrated spell-related UI elements (`SpellComponent`, `SpellList`, `SpellTagManager`) into settings and sidebars.
- Updated logic to handle enabling/disabling of the spells tool per book.

components/book/settings/BookSettingSidebar.tsx

@@ -1,7 +1,16 @@
 'use client'
 // Removed Next.js Link import for Electron
 import {FontAwesomeIcon} from "@fortawesome/react-fontawesome";
-import {faBook, faFeather, faGlobe, faListAlt, faMapMarkedAlt, faPencilAlt, faUser} from "@fortawesome/free-solid-svg-icons";
+import {
+    faBook,
+    faGlobe,
+    faHatWizard,
+    faListAlt,
+    faMapMarkedAlt,
+    faPencilAlt,
+    faUser,
+    faWandMagicSparkles
+} from "@fortawesome/free-solid-svg-icons";
 import {Dispatch, SetStateAction} from "react";
 import {IconDefinition} from "@fortawesome/fontawesome-svg-core";
 import {useTranslations} from "next-intl";
@@ -53,10 +62,15 @@ export default function BookSettingSidebar(
             name: 'bookSetting.characters',
             icon: faUser
         },
+        {
+            id: 'spells',
+            name: 'bookSetting.spells',
+            icon: faHatWizard
+        },
         {
             id: 'quillsense',
             name: 'bookSetting.quillsense',
-            icon: faFeather
+            icon: faWandMagicSparkles
         },
         // {
         //     id: 'objects',