feat(vocab): implement SRS features and enhance vocabulary management

- Added new endpoints in vocabController for retrieving SRS due items and reviewing SRS items, improving spaced repetition support.
- Updated vocabService to handle SRS item creation and scheduling, ensuring effective tracking of vocabulary exposure.
- Enhanced vocabRouter with new routes for SRS functionalities, facilitating user interaction with spaced repetition features.
- Modified VocabPracticeDialog and VocabCourseView to integrate SRS due items, providing users with timely review opportunities.
- Updated translations and UI elements to reflect new SRS features, enhancing user experience and accessibility.

backend/controllers/vocabController.js

@@ -40,6 +40,13 @@ class VocabController {
     this.getVocabDistractorPool = this._wrapWithUser((userId, req) =>
       this.service.getVocabDistractorPool(userId, req.params.courseId, req.query.beforeLessonId)
     );
+    this.getCourseSrsDue = this._wrapWithUser((userId, req) =>
+      this.service.getCourseSrsDue(userId, req.params.courseId, req.query)
+    );
+    this.reviewSrsItem = this._wrapWithUser((userId, req) =>
+      this.service.reviewSrsItem(userId, req.body),
+      { successStatus: 201 }
+    );
     this.getCourseByShareCode = this._wrapWithUser((userId, req) => this.service.getCourseByShareCode(userId, req.body.shareCode));
     this.updateCourse = this._wrapWithUser((userId, req) => this.service.updateCourse(userId, req.params.courseId, req.body));
     this.deleteCourse = this._wrapWithUser((userId, req) => this.service.deleteCourse(userId, req.params.courseId));