[Feat]: Create new feature branch A2A protocol

### Is your feature request related to a problem? Please describe.

As mentioned in https://github.com/a2aproject/A2A/issues/1925 - proposal, We need a feature branch to merge the PRs a developer branch.

https://github.com/a2aproject/A2A/issues/1925

### Describe the solution you'd like

Create a feature branch

### Describe alternatives you've considered

_No response_

### Additional context

_No response_

### Code of Conduct

- [x] I agree to follow this project's Code of Conduct

This is a repository management task. The issue references a proposal in issue #1925. To proceed, one would need to understand the project's branching strategy and use git commands to create a new feature branch from the appropriate base. The work is administrative and does not involve code changes.

Scritto dal modello di indicizzazione a partire dal testo della issue.