Feat/implement new identity contract

[psychemist]

🚀 Pull Request Description

• Adds new identity contract that stores users identities and leverages web3 identity and has a record of the users
• Added robust tests for verifying full functionality of the identity contract
• Refactored buggy code in create and update identity functions

🔗 Linked Issues

Fixes #99

🧪 Testing Instructions

1. cd into the contracts folder from the root directory
2. run scarb test command
3. you should have see the results of each test module on the command line output

📸 Screenshots

- `scrab build && scarb test`

✅ PR Checklist

• I have tested these changes locally
• Relevant documentation is updated
• My code follows the repository's coding guidelines
• I have added/updated tests that prove my fix/feature
• No breaking changes introduced
• Code is well-commented and readable

[vercel]

@psychemist is attempting to deploy a commit to the poulavbhowmick03's projects Team on Vercel.

A member of the Team first needs to authorize it.

[PoulavBhowmick03]

LGTM

[psychemist]

thanks @PoulavBhowmick03