Get All Spots

[gracecizma]

Returns all the spots.

• [x] Seed data exists in the database for spots to be returned.
• [x] Successful response includes each spot in the database.
• [x] Spot data returned includes the id, ownerId, address, city, state, country, lat, lng, name, description, price, createdAt, updatedAt, previewImage, and avgRating

[gracecizma]

need to add previewImg and avgRating

[gracecizma]

avgRating done