Assignment Submission Portal

This is going to have features for both Admin and users with OAuth2.

For starting the server

make build
./gx api

User Endopints

POST /register - Register a new User
POST /login - User login
POST /upload - Upload an Assignment
GET /admins - Fetches all admins

Admin Endpoints

POST /register - Register a new Admin
POST /login - Admin login
GET /assignments - View assignments tagged to admin
POST /assignments/:id/accept - Accept an assignment
POST /assignments/:id/reject - Reject an assignment