feat(evm): add PassthroughAuth/IAuth

Author: Quazia

packages/evm/contracts/auth/IAuth.sol

@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-3.0
+pragma solidity ^0.8.24;
+
+/// @title IAuth Interface
+/// @dev Interface for authorization contracts.
+interface IAuth {
+    /// @notice Checks if an address is authorized
+    /// @param addr The address to check for authorization
+    /// @return bool Returns true if the address is authorized, false otherwise
+    function isAuthorized(address addr) external view returns (bool);
+}

packages/evm/contracts/auth/PassthroughAuth.sol

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-3.0
+pragma solidity ^0.8.24;
+import {IAuth} from "contracts/auth/IAuth.sol";
+/// @title Passthrough Authorization Contract
+/// @dev Implements the IAuth interface, always authorizing access.
+contract PassthroughAuth is IAuth {
+    /// @notice Checks if an address is authorized
+    /// @dev In this implementation, all addresses are authorized.
+    /// @param user The address to check for authorization
+    /// @return bool Always returns true, indicating any address is authorized
+    function isAuthorized(address user) public view override returns (bool) {
+        return true;
+    }
+}