Post new video endpoint

#### HTTP Method: `POST`

#### Route: `/api/videos`

#### Acceptance Criteria

- [ ] There is a `POST /api/videos` backend endpoint to facilitate adding videos to the database.
- [ ] The endpoint generates and attaches a unique ID to each newly added video.
- [ ] The endpoint accepts video data in JSON format (example provided).
- [ ] The endpoint responds with a JSON response that includes the generated id (example provided)

Start at the backend routing entry point for /api/videos and trace how video records are added to the database. Verify the POST route accepts the specified JSON data, generates a unique ID, and returns that ID in a JSON response.

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