Cedarwood for Teachers

1. Added a complete Manage Slots feature for teachers, including slot-type handling, validation and normalization logic, and backend integration for fetching and updating slots. 2. Added Available Slots support on the My Calendar screen for better visibility and schedule management. 3. Fixed issues related to Bank Details handling on the Profile screen. 4. Fixed an issue in the Refer & Earn screen where the “My Referrals” button was not redirecting users to the intended page. 5. Fixed an issue in the Trial Feedback screen where the feedback input field was getting hidden behind the keyboard on Android devices. 6. Introduced custom toast styling to improve notification consistency and enhance the overall in-app user experience.