feat: Use Uint8Array instead of Buffer to adopt widely available API

[rogaldh]

Description

PR aims to support Uint8Array and replace Buffer with it.

Buffer-specific methods are replaced with bytes helpers that use API like DataView, etc

Type of change

• Bug fix
• New feature
• Protocol integration
• Documentation update
• Other (please describe):

Screenshots

Testing

Related Issues

Checklist

• My code follows the project's style guidelines
• I have added tests that prove my fix/feature works
• All tests pass locally and in CI
• I have updated documentation as needed
• I have run build:info script to update build information
• CI/CD checks pass
• I have included screenshots for protocol screens (if applicable)
• For security-related features, I have included links to related information

Additional Notes

[vercel]

@rogaldh is attempting to deploy a commit to the Solana Foundation Team on Vercel.

A member of the Team first needs to authorize it.