feat: add etherfi rp adaptors

contracts/EtherfiRateProviderWrapper.sol

@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+pragma solidity ^0.8.0;
+
+import "./interfaces/IRateProvider.sol";
+
+interface IEtherfiRateProvider {
+    function getRateSafe() external view returns (uint256);
+}
+
+contract EtherfiRateProviderWrapper is IRateProvider {
+    IEtherfiRateProvider public immutable rateProvider;
+
+    constructor(IEtherfiRateProvider _rateProvider) {
+        rateProvider = _rateProvider;
+    }
+
+    function getRate() external view override returns (uint256) {
+        return rateProvider.getRateSafe();
+    }
+}

contracts/EtherfiRateProviderWrapperFactory.sol

@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+pragma solidity ^0.8.0;
+
+import "./BaseRateProviderFactory.sol";
+
+import "./EtherfiRateProviderWrapper.sol";
+
+/**
+ * @title Etherfi Rate Provider Wrapper Factory
+ * @notice Factory for creating EtherfiRateProviderWrappers
+ * @dev This contract is used to create EtherfiRateProviderWrapper contracts which wraps the
+ * `getRateSafe` call into a `getRate` call.
+ */
+
+contract EtherfiRateProviderWrapperFactory is BaseRateProviderFactory {
+    /**
+     * @notice Deploys a new EtherfiRateProviderWrapper contract using an EtherfiRateProvider contract.
+     * @param rateProvider - The EtherfiRateProvider contract.
+     */
+    function create(IEtherfiRateProvider rateProvider) external returns (EtherfiRateProviderWrapper) {
+        EtherfiRateProviderWrapper rateProviderWrapper = new EtherfiRateProviderWrapper(rateProvider);
+        _onCreate(address(rateProviderWrapper));
+        return rateProviderWrapper;
+    }
+}