`/training-programs` endpoints

[kenziebottoms]

Description

Adds the following endpoints:

• GET /training-programs: gets all training programs
• GET /training-programs/:id: gets one training program by id
• POST /training-programs: posts new training program
• PUT /training-programs/:id: replaces/updates one training program by id
• DELETE /training-programs/:id: removes one training program by id

Related Ticket(s)

fixes #59, fixes #9

Steps to Test Solution

1. npm run db:generate
2. comment out non-training program routes
3. http://localhost:8080/api/v1/training-programs should give you training programs with ids 0-9
4. http://localhost:8080/api/v1/training-programs/3 should give you a training program called Brand 101
5. POST http://localhost:8080/api/v1/training-programs:

   {"max_capacity":17,"start_date":"2017-11-23T21:57:41.704Z","end_date":"2018-02-20T02:15:39.657Z","name":"Star Wars 101"}

6. should return 10 and http://localhost:8080/api/v1/training-programs/10 should now give you the Star Wars training program
7. PUT http://localhost:8080/api/v1/training-programs/3:

   {"max_capacity":17,"start_date":"2017-11-23T21:57:41.704Z","end_date":"2018-02-20T02:15:39.657Z","name":"Star Wars 101"}

8. should return 3 and http://localhost:8080/api/v1/training-programs/3 should now give you the Star Wars training program
9. PUT http://localhost:8080/api/v1/training-programs/31:

   {"max_capacity":17,"start_date":"2017-11-23T21:57:41.704Z","end_date":"2018-02-20T02:15:39.657Z","name":"Star Wars 101"}

10. should return 31 and http://localhost:8080/api/v1/training-programs/31 should now give you the Star Wars training program
11. DELETE http://localhost:8080/api/v1/training-programs/31 should return 31 and http://localhost:8080/api/v1/training-programs/31 should now give you a "Training program not found" error

[DavidLarsKetch]

testing!

[jordan-castelloe]

testing!