feat: add zama to coinFactory

[MohammedRyaan786]

TICKET: CHALO-402

This pull request adds support for ERC-7984 confidential tokens to the BitGo platform, including their registration, instantiation, and handling throughout the codebase. The changes introduce a new Erc7984Token class, update token registration logic, and ensure proper test coverage and exports.

ERC-7984 Token Support

• Added a new Erc7984Token class in sdk-coin-eth, implementing confidential token logic and configuration, including constructor, metadata accessors, and transaction rules.
• Updated imports and exports across sdk-coin-eth and BitGo modules to include Erc7984Token, Erc7984TokenConfig, and Erc7984Coin. [1] [2] [3] [4] [5]

Token Registration and Factory Integration

• Modified the coin factory and registration logic to handle ERC-7984 tokens, including dynamic constructor creation and proper registration in both main and test networks. [1] [2] [3] [4]
• Updated the getTokenConstructor function to instantiate Erc7984Token when appropriate, based on token type and configuration.

Testing and Validation

• Expanded unit tests to verify ERC-7984 token registration, constructor counts, and global coin map integration, ensuring parity with ERC20 and ERC721 token handling. [1] [2] [3]
• Added test coverage for ERC-7984 token presence in browser tests.

[linear-code]

CHALO-402