WIP: feat(provider): Add Brother ID domain resolution support

[SamrendraS]

Motivation and Resolution

This PR introduces Brother ID integration into Starknet.js, providing methods to interact with .brother domain names. This addition allows developers to easily resolve .brother domains to addresses and vice versa, similar to existing StarknetId functionality.

RPC version

N/A - This feature works with existing RPC implementations.

Usage related changes

• Added new BrotherId class with methods to interact with Brother Identity contracts
• Introduced methods to resolve .brother domains:
  • getBrotherName: Get the primary Brother domain for an address
  • getAddressFromBrotherName: Resolve a Brother domain to its address
  • getBrotherProfile: Get complete profile information for a Brother domain
• Added utility function isBrotherDomain to validate .brother domains
• Extended the RPC Provider to include Brother ID functionality by default

Development related changes

• Added new source file src/provider/extensions/brotherId.ts with Brother ID implementation
• Updated src/provider/extensions/default.ts to include BrotherId in the RPC Provider mixin
• Added TypeScript interface BrotherProfile for structured domain information

Checklist:

• Performed a self-review of the code
• Rebased to the last commit of the target branch (or merged it into my branch)
• Linked the issues which this PR resolves
• Documented the changes in code (All methods include JSDoc documentation)
• Updated the tests (Tests need to be added)
• All tests are passing

[tabaktoni]

Right stuff in the right place, without a deep dive into implementation.
LGTM