Get all Reviews by a Spot's id

[Lillith13]

Returns all the reviews that belong to a spot specified by id.

• [x] Seed data exists in the database for reviews to be returned.
• [x] Successful response includes only reviews for the specified spot
• [x] Review data returned includes the id, userId, spotId, review, stars, createdAt, and updatedAt
• [x] Review data returns associated data for User, including the id, firstName, and lastName
• [x] Review data returns associated data for ReviewImages, an array of image data including the id and url
• [x] Error response with status 404 is given when a spot does not exist with the provided id