Adds combined/unified bech32+EVM wallet utility functions

[cordt-sei]

Add unified Wallet Utility Functions to @sei-js/evm

Implements wallet utility functions for address generation and validation in both native and EVM context.

Changes

1. Added new utility functions in src/utils/walletUtils.ts:

   • generateAddressesFromPrivateKey: Generates Sei and EVM addresses from a private key
   • deriveAddressesFromPublicKey: Derives Sei and EVM addresses from a public key
   • isValidSeiAddress: Validates a Sei address
   • isValidEvmAddress: Validates an EVM address

2. Created unit tests in src/utils/walletUtils.spec.ts

3. Updated README.md for new utilities

4. Bumped package version from 1.4.0 to 1.5.0

5. Updated deps, specifically bech32 to latest

Implementation Details

• The new functions use the bech32 library for Sei address encoding and validation
• SHA-256 and RIPEMD-160 hashing is used for Sei address generation
• EVM address generation uses keccak-256 hashing as per Ethereum standards
• Error handling for invalid inputs

Testing

• Unit tests added to cover all new functions:
  • Tests for generating addresses from private keys
  • Tests for deriving addresses from public keys
  • Tests for validating Sei and EVM addresses
  • Tests for handling invalid inputs
• All tests are passing

Documentation

• README.md has been updated with examples for each new function
• Inline comments have been added to the code for a better view of the overall process

Impact

Adds easily accessible capabilities for developers working with both Sei and EVM addresses, providing a unified interface for address operations, verification and testing

[changeset-bot]

🦋 Changeset detected

Latest commit: b492dee

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@sei-js/evm	Patch

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[cordt-sei]

Not sure why the workflow is failing, it builds and tests good locally.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.91%. Comparing base (5e40d59) to head (b492dee).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #195      +/-   ##
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+ Coverage   84.47%   86.91%   +2.43%     
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  Files          16       17       +1     
  Lines         161      191      +30     
  Branches       25       27       +2     
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+ Hits          136      166      +30     
  Misses         25       25              

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