feat(GenerateMcqMrqQuestion): add generate MCQ/MRQ questions with AI

[craigtonlian]

This PR introduces a new feature for generating multiple-choice (MCQ) and multiple-response (MRQ) questions using a language model (LLM), along with associated updates to the backend and frontend to support this functionality.

Frontend Enhancements for Question Generation:

• Added new GenerateMcqMrqQuestionPage.tsx to allow users to generate both MCQ and MRQ question in a similar page layout.
• Increased user prompt character count to 10,000 characters.
• Added Enhance Mode and Create Mode with tooltip to clarify that Enhance Mode builds on an existing question, while Create Mode generates new questions from scratch.
• Hides Number of Questions field when Create Mode is selected.
• Fixed a bug on active conversation title not syncing with Title field in prototype form.
• Added Show/Hide Options expandable in GenerateMcqMrqExportDialog.tsx for users to easily confirm question details before exporting.
• Added en, zh, ko translation support for labels.

Backend Enhancements for Question Generation:

• Added a new generate action in app/controllers/course/assessment/question/multiple_responses_controller.rb to handle question generation requests, validate parameters, and return formatted responses.
• Introduced Course::Assessment::Question::MrqGenerationService to encapsulate the logic for generating MCQ/MRQ questions using LLM prompts and parsing responses.
• Added JSON schemas and prompt templates for MCQ and MRQ generation to define the structure of generated questions and guide LLM behavior.

API and Frontend Updates:

• Updated the create and update methods in McqMrqAPI to return a RedirectWithEditUrl object, which includes both a redirect URL and an optional edit URL.
• Added a new generate method in McqMrqAPI to call the backend's generate action for question generation.
• Enhanced the GenerateTabs component in the frontend to improve UI responsiveness and display metadata for generated questions.

Controller Improvements:

• Modified the create and update actions in app/controllers/course/assessment/question/multiple_responses_controller.rb to include redirectEditUrl in the JSON response for easier navigation to the edit page.

View Enhancements:

• Updated show.json.jbuilder to include URLs for generating MCQ and MRQ questions in the assessment view.
• Added support for generating MRQ questions from existing ones in _question_assessment.json.jbuilder.

[adi-herwana-nus]

few minor changes needed