Description

This PR will add a .env file to securely store these credentials. The code now retrieves them from the environment variable, keeping them hidden within the development environment.

Here's what this means:

• Improved security: Credentials are no longer directly exposed in the code.
• Separate testing setup: Developers can easily create their own Firebase and Appwrite projects for local testing without needing real credentials.

Fixes #273

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Refactor (does not change functionality, e.g. code style improvements, linting)
• Documentation update

How Has This Been Tested?

I haven't added unit tests as these are code refactors, moreover it doesn't look like tests have been initialized beforehand.
I'll be happy to add if required.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings

Maintainer Checklist

• closes #xxx
• Tag the PR with the appropriate labels