Create WorkoutExercise Service

[andrew-sequeira]

User Story As a user I would like to be able to input my stats for various exercises so that I can keep track of my progress

Description For the workout exercise data to be persisted in our database, we need a way to connect and interact with the WorkoutExercise collection in the database. A "workoutExercise-service.js" file should be prepared with methods of connecting to the collection in addition to any required functionality such as crud operations to allow for the backend to interact with the database.

Acceptance Criteria

• [x] CRUD operations should be setup
• [x] additional operations should be implemented for specific read operations such as by id
• [x] works with workout mongoDB schema

Testing

• [x] verify ability to connect to the database
• [x] verify all CRUD operations execute correctly
• [x] verify that data is persisted after restart

[andrew-sequeira]

all required services as of right now implemented.