feat: add phone number authentication

[lkmandy]

Description

Implement phone number authentication using firebase and flutter bloc

Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• ❌ Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactor
• ✅ Build configuration change
• 📝 Documentation
• 🗑️ Chore

Pre-launch Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I read and ran all relevant commands as specififed in the Running Tests section of the Contributor Guide.
• The title of the PR follows the Conventional Commits guideline
• My local branch follows the naming standards in the Deepsource Branch Naming Convention or Biodiversity Branch Naming Convention
• I listed at least one issue that this PR fixes in the description above.
• I updated pubspec.yaml with an appropriate new version according to the pub versioning philosophy,
• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or this PR is [test-exempt].
• All existing and new tests are passing.

[kefeh]

This was a great start, I like the structuring and the implementations details, kudus. I left a few comments, hope it helps

[kefeh]

There are three problems i have with this.

1. A function should have a maximum of 3 parameters and others can be compiled into a unit either map or class for proper readability etc.
2. Avoid passing callbacks as parameters if you if you can.
3. Most importantly, you are tightly coupling this facad with Firebase by depending on the firebase specific accessory functions and it defeats the purpose of a facad, you should be able to use even SuperBase and extend this facad without an issue

[kefeh]

What you can do here is define handlers for PhoneVerificationFailed, PhoneVerificationCompleted, PhoneCodeSent, PhoneCodeAutoRetrievalTimeout as accessory and private functions inside this Repository class and then call them here. If you realize, you see that verificationId is set and used only in this repository, so one thing you can do here is set is as a class variable initialized with an empty string, set the value in PhoneCodeSent and then use it inside verifyAndLogin

[kefeh]

same here, remove verificationId so we dont have coupling with firebase to the facad