Alpha v1 backend todo

[William-An]

First version of homiehomie backend, providing basic data model instance modification

1. [x] Scheduler
   1. [x] Model
   2. [x] API Documentation
   3. [x] API Backend implementation
   4. [x] Add course section num field?
   5. [x] Set up test
      1. [x] Test model method
      2. [x] Test view
         1. [x] Testcases against empty db
         2. [x] Testcases against db with data
      3. [x] Coverage report
      4. [x] GitHub action
         1. [x] Django CI + Deploy to test server
   6. [x] API Post and Put
      1. [x] Create/Modify question
      2. [x] Create/Modify note
      3. [x] Create/Modify Post
      4. [x] Create/Modify PostAnswer
   7. [x] API Delete
      1. [x] API Doc
      2. [x] API Implementation
         1. [x] Post answer deletion
2. [ ] Importing Course
   1. [x] Detail schema of course data
   2. [ ] VT: portal
   3. [ ] Purdue via API: portal
   4. [ ] UNC via pdf miner: portal
   5. [x] BU via scraper: search portal
   6. [x] Maryland via scraper: portal