Posts CRUD API

API that allows users to create and like posts, and follow other users.

Endpoints

POST /users/create and POST /posts/create to create a user
and a post. See posts/models.py for reference on what to supply in the request body
for posts. User endpoint should accept a username and password. A 201 HTTP status
code is the expected response.
GET /users/top that returns a list of users with one or more posts
sorted by number of posts authored descending. The expected response is a list of:
```
{
  "username": "<username>",
  "posts": <number of posts>
}
```
(unidirectional) follow relationships to User and an endpoint POST /users/follow
that accepts a user id and a following user id from the request body
GET /users/feed/<user_id> that returns a list of posts created
by the user or anyone they follow with number of likes received in reverse
chronological order. List items should have the following structure:
```
{
  "id": "<post id>",
  "body": "<post body>",
  "author": "<post author's username>",
  "likes": <post like count>
}
```

If you have Poetry installed simply poetry install to
set up you environment.
- If you don't want to use Poetry, create a virtual environment with django and
  djangorestframework installed.
Set up the SQLite database
- Poetry: poetry run python manage.py migrate
- Non-Poetry: python manage.py migrate
Run the server (on port 8000)
- Poetry: poetry run python manage.py runserver
- Non-Poetry: python manage.py migrate