chore: add assignment 2 readme

Assignment2.md

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+# Assignment 2
+
+> [!IMPORTANT] 
+> As of late, the list of questions appear to take very long to load, as there are over 2000 being fetched. Please wait for a minute and a half if you see no questions on the question list page. We apologise for the inconvenience, and seek your understanding.
+
+## To set up and execute
+
+### Download
+Download the ZIP file named `ay2324s1-course-assessment-g17-Assignment-2.zip` from [Assignment-2-Updated](https://github.com/CS3219-AY2324S1/ay2324s1-course-assessment-g17/releases/tag/Assignment-2-Updated).
+2. Unzip the file and navigate to the folder `ay2324s1-course-assessment-g17-Assignment-2`.
+
+### Include .env files
+3. Set up the environment for the question service, user service, and frontend by including the `.env` files for each, which have been submitted as: 
+`Assignment2-QuestionServiceEnv.txt`, 
+`Assignment2-UserServiceEnv.txt`, 
+`Assignment2-FrontendEnv.txt` respectively.
+Make sure they are `.env` files within the question service, user service, and frontend directories.
+
+For convenience, they have been placed here:
+
+`Assignment2-QuestionServiceEnv.txt`
+```
+MONGO_CONNECTION_STRING=mongodb+srv://sherylhci:[email protected]/peerprep_app?retryWrites=true&w=majority
+PORT=8080
+ACCESS_TOKEN_SECRET="access_secret"
+REFRESH_TOKEN_SECRET="refresh_secret"
+FRONTEND_URL="http://localhost:3000"
+```
+
+`Assignment2-UserServiceEnv.txt`
+```
+DATABASE_URL="postgresql://postgres@localhost:5432/postgres?schema=public"
+PORT=8000
+ACCESS_TOKEN_SECRET="access_secret"
+REFRESH_TOKEN_SECRET="refresh_secret"
+FRONTEND_URL="http://localhost:3000"
+```
+
+`Assignment2-FrontendEnv.txt`
+```
+REACT_APP_BACKEND_URL=http://localhost:8080/api
+REACT_APP_USER_SERVICE_BACKEND_URL=http://localhost:8000/
+```
+
+### Install dependencies
+4. Change into each directory (`frontend`, `backend/question-service`, `backend/user-service`) and run `npm install` to install the dependencies for the question service, user service, and frontend.
+
+### Set up postgresql
+5. Start the postgresql used by the frontend by running below on another terminal window. 
+
+```
+docker run --rm -p 5432:5432 -e POSTGRES_HOST_AUTH_METHOD=trust postgres;
+```
+
+6. Then navigate to the user service directory (i.e. `ay2324s1-course-assessment-g17-Assignment-2/ay2324s1-course-assessment-g17-Assignment-2/backend/user-service`) and run the following commands:
+
+```
+npx prisma db push
+npx prisma db seed
+```
+
+This will set up the postgresql database schema, and also seed the database with 1 ADMIN role user account, the "designated maintainer role" account, and 1 USER role user accounts, "registered users". Details for usernames and passwords below.
+
+```
+ADMIN role account details:
+username: admin_user
+password: admin_password 
+
+USER role account details:
+username: regular_user
+password: user_password
+```
+
+Other accounts signed up from the application interface are all USER role user accounts, "registered users". 
+
+## Finished set up
+7. `npm start` the question service, user service, and frontend.
+
+## Notes
+To see the user database, you can simply run the command `npx prisma studio`, which will open up an interface for you to easily view the user database.