feat: add IAttestationRegistry interface for Nitro attestation tracking

interfaces/multiproof/tee/IAttestationRegistry.sol

@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+/// @title IAttestationRegistry
+/// @notice Registry interface for tracking verified AWS Nitro Enclave attestations on Base L2
+/// @dev Complements INitroEnclaveVerifier by providing a queryable record of past verifications
+interface IAttestationRegistry {
+    /// @notice Emitted when a new attestation record is registered
+    /// @param imageId The enclave image ID that was verified
+    /// @param submitter Address that submitted the attestation
+    /// @param timestamp Block timestamp of registration
+    event AttestationRegistered(bytes32 indexed imageId, address indexed submitter, uint256 timestamp);
+
+    /// @notice Emitted when an attestation record is revoked
+    /// @param imageId The enclave image ID that was revoked
+    /// @param revokedBy Address that triggered the revocation
+    event AttestationRevoked(bytes32 indexed imageId, address indexed revokedBy);
+
+    /// @notice Registers a verified attestation on-chain
+    /// @param imageId The verified enclave image ID
+    /// @param proofHash Hash of the original proof for auditability
+    function registerAttestation(bytes32 imageId, bytes32 proofHash) external;
+
+    /// @notice Revokes a previously registered attestation
+    /// @param imageId The enclave image ID to revoke
+    function revokeAttestation(bytes32 imageId) external;
+
+    /// @notice Returns registration details for a given imageId
+    /// @param imageId The enclave image ID to query
+    /// @return submitter Address that registered the attestation
+    /// @return timestamp Block time of registration
+    /// @return revoked Whether this attestation has been revoked
+    function getAttestation(bytes32 imageId) external view returns (
+        address submitter,
+        uint256 timestamp,
+        bool revoked
+    );
+
+    /// @notice Returns total number of registered attestations
+    function attestationCount() external view returns (uint256);
+}