Migration: Firebase to Appwrite

[chandansgowda]

This pull request migrates the existing functionality of Resonate from Firebase to Appwrite, a self-hosted backend server that offers similar features and functionalities (#63). This migration brings several advantages, including increased control over the backend infrastructure, improved scalability, and reduced reliance on third-party services.

Changes Made

• Replaced Firebase authentication with Appwrite authentication services.
• Updated data storage and retrieval methods to utilize Appwrite's database instead of Firebase's Firestore.
• Made necessary modifications to ensure compatibility with Appwrite's SDKs and APIs.

Benefits

• Enhanced Security: Appwrite provides robust security features, including server-side verification and authentication, protecting user data and ensuring secure communication.
• Scalability and Control: By migrating to Appwrite, we gain better control over our backend infrastructure, allowing us to scale resources according to project requirements.
• Reduced Dependency: Moving away from Firebase reduces our reliance on third-party services and gives us more flexibility in choosing backend providers.
• Cost Optimization: Appwrite offers flexible pricing options, potentially resulting in cost savings compared to Firebase.

Checklist

• The codebase has been refactored to use Appwrite APIs and SDKs.
• Existing functionality has been thoroughly tested after migration.
• Relevant stakeholders have been notified about the migration from Firebase to Appwrite.

Please review this pull request and provide feedback and suggestions for further improvements.