feat: add node attestations endpoint

[Cifko]

This pull request introduces functionality to manage node attestations in the atoma-proxy-service and atoma-state modules. The key changes include adding new API endpoints for managing node attestations, integrating database support for storing and retrieving attestations, and updating the OpenAPI documentation to reflect these changes.

New Node Attestation Functionality

• API Endpoints for Node Attestations:

  • Added two new endpoints: GET /get_node_attestation/{id} to retrieve a node's attestation and PUT /update_node_attestation to update a node's attestation. These endpoints are implemented in atoma-proxy-service/src/handlers/nodes.rs and integrated into the router. [1] [2] [3]

• Database Integration:

  • Created a new node_attestations table to store node attestation data, including node_small_id, attestation, and updated_at timestamp.
  • Added methods to AtomaState in atoma-state/src/state_manager.rs for inserting, updating, and retrieving node attestations from the database.

• Data Structures:

  • Introduced new structs NodeAttestation and UpdateNodeAttestation in atoma-state/src/types.rs to represent attestation data and update requests, respectively. These are used throughout the new functionality.

Codebase Modifications

• Dependency Updates:

  • Added dependencies for blake2 and fastcrypto in atoma-proxy-service/Cargo.toml to support cryptographic operations for signature verification.

• Router and Module Updates:

  • Updated the proxy service router and module structure to include the new nodes module and its routes. [1] [2] [3]

These changes collectively enhance the system by enabling secure and efficient management of node attestations, with robust database support and API integration.

[jorgeantonio21]

Looking good