Feat: Add domain registration example for sns

[akashrdev]

Adding devnet registration example to SNS example to help further explain SNS functionalities.

Jira Link:
N/A

Description

Add domain registration functions for devnet, as well as associated util functions needed to facilitate devenet registrations using the SNS SDK.

How has this been tested?

Local testing to ensure transaction success.

Screenshots (if appropriate):

Types of changes

• 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)

Checklist:

• My code follows the code style of this project. (run lint)
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• My code requires a db migration.

[vercel]

@akashrdev is attempting to deploy a commit to the Consensys Team on Vercel.

A member of the Team first needs to authorize it.

[yashovardhan]

LGTM