API calls for VRMS

### Dependency
- #174
- #88

### Overview
This is a list of the API calls that are currently being used by VRMS that will need to be reproduced from PD, with the addition of a couple that I have good reason to believe we will need.

### Action Items
Make these API calls available:

- [ ] **Users** #15
GET - Get all users - /api/users/
GET - Get one user by _id - /api/users/:user_id
GET - Get one user by email - /api/users/:user_email
POST - Create new user - /api/users
PATCH - Update one user by _id - /api/users/:user_id
DELETE - Delete one user by _id - /api/users/:user_id

- [ ] **Recurring Events** #14
GET - Get all recurring events - /api/recurringevents
GET - Get one recurring event by id - /api/recurringevents/:recurringevent_id
POST - Create new recurring event - /api/recurringevents
PATCH - Update one recurring event by id- /api/recurringevents/:recurringevent_id
DELETE - Delete recurring event by id - /api/recurringevents/:recurringevent_id

- [ ] **Events**
GET - Get all events - /api/events
GET - Get one event by id - /api/events/:event_id
POST - Create new event - /api/events
PATCH - Update one user by id - /api/events/
DELETE - Delete one event by id - /api/events/:event_id

- [ ] **Checkins**
GET - Get all checkins - /api/checkins
GET - Get all checkins by event - /api/checkins/:event_id
GET - Get all checkins by project_id - /api/checkins/:project_id (needs a join)
GET - Get all checking by user_id - /api/checkins/:user_id
GET - Get one checkin by id - /api/checkins/:checkin_id
POST - Create new checkin - /api/checkins

- [ ] **Projects** #16
GET - Get all projects - /api/projects
GET - Get one project by id - /api/projects/:project_id
POST - Create new project - /api/projects
PATCH - Update one project by id - /api/projects
DELETE - Delete one project by id - /api/projects/:project_id

- [ ] **Questions**
GET - Get all questions - /api/questions
GET - One question by id - /api/questions/:question_id
POST - Create a question - /api/questions
PATCH - Update a question by id- /api/questions/:question_id
DELETE - Delete a question by id - /api/questions/:question_id