Create user onboarding tutorial

Terms

• I have searched open and closed feature requests
• I agree to follow Scribe-iOS' Code of Conduct

Description

Initial user tests have indicated that a user tutorial would be a useful addition to the app screen. The general plan for this will be another partnership with Spencer who did the app icon and logo. He's going to be making a workflow that can then be swiped through by users. Resources related to swiping include this, this and this, with the Apple documentation for it being found here.

• This issue is being done in tandem with #16, as the plan is to move the privacy policy button to a hamburger menu at the top right and then have that button instead be a "Quick Tutorial" button. This button will trigger the workflow.

Contribution

I'll be doing the codes for this, but help is welcome :)