Create Grading Service (POST /cs3213/parser endpoint only)

[tryyang2001]

Pull Request

Description

This PR set up the base structure of grading service, create one simple API wrapper for ITS API POST /cs3213/parser endpoint. The most important endpoint will be the POST /cs3213/feedback_error, which is still in progress and will have another PR later.

To test calling the grading service API, follow the below instructions:

1. Run yarn to install necessary dependencies
2. Run yarn dev to start the server locally on port 8088
3. Use Postman, call the endpoint POST /grading/api/parser/generate, the required input request body is exactly the same as the ITS API.

Related Issue(s)

Screenshots (if applicable)

The output is not human-readable, but this parser string will be the value we needed in the request body of POST /cs3213/feedback_error fyi.

Checklist

• I have checked that the changes included in the PR are intended to merge to master or any destination branch.
• I have verified that the new changes do not break any existing functionalities, unless the new changes are intended and have approved by the team.
• I will take care of the merging and delete the side-branch after the PR is merged.

Additional Notes/References

[WillCWX]

LGTM!