Create onboarding flow according to Figma reference
Requirements
- Sheet appears once after someone opens the feature for the first time
- Continue should bring the user to the main flow, with Tooltips enabled T359135
- Learn more should link to the Add an Image section of the Suggested Edits FAQ Page https://www.mediawiki.org/wiki/Wikimedia_Apps/iOS_Suggested_edits#Add_an_image