Adding Fern API to Programming APIs

• [✅] My submission is formatted according to the guidelines in the contributing guide
• [✅ ] My addition is ordered alphabetically
• [✅ ] My submission has a useful description
• [✅] The description does not have more than 100 characters
• [✅ ] The description does not end with punctuation
• [✅] Each table column is padded with one space on either side
• [✅] I have searched the repository for any relevant issues or pull requests
• [✅] Any category I am creating has the minimum requirement of 3 items
• [✅] All changes have been squashed into a single commit