New endpoint to return existing goals

[crysfel]

We want to speed up the process of applying for mentorships by pulling the current goals from the mentee and populate the form application.

We need a new endpoint that returns the current goals for the given user, if there are no goals defined we are going to set a few common goals to pre-fill the application.

Request:

GET /users/${user.id}/goals

Response:

{
  data: { 
    goals: [
        { id: number, description: string } 
    ],
    expectation: string,
    background: string 
  } 
}

AC

• Model the data for goals in mongo
• Read the current data from the database
• If there are no goals we need to send default goals (static for now)
• Return the data