Add QuillSense support with settings and integration

- Introduced new "QuillSense" feature for AI-assisted book creation.
- Added QuillSense settings panel with advanced options and disable/enable functionality.
- Updated GhostWriter and TextEditor components to respect QuillSense settings.
- Extended models and repositories to track and manage QuillSense state per book.
- Localized new strings for English and French.

components/ScribeControllerBar.tsx

@@ -77,6 +77,7 @@ export default function ScribeControllerBar() {
                 publicationDate: response.desiredReleaseDate,
                 desiredWordCount: response.desiredWordCount,
                 totalWordCount: response.desiredWordCount,
+                quillsenseEnabled: response.quillsenseEnabled,
             });
         } catch (e: unknown) {
             if (e instanceof Error) {
@@ -141,7 +142,7 @@ export default function ScribeControllerBar() {
             </div>
             <div className="flex items-center space-x-4">
                 {
-                    hasAccess &&
+                    hasAccess && book?.quillsenseEnabled !== false &&
                     <CreditCounter isCredit={isSubTierTwo}/>
                 }
                 <div