feat: add fluid merkle rewards claim connector

contracts/mainnet/connectors/merkleDistributor/events.sol

@@ -0,0 +1,21 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.8.2;
+
+contract Events {
+    event LogClaim(
+        uint256 cumulativeAmount,
+        address fToken,
+        uint256 cycle,
+        bytes32[] merkleProof,
+        uint256 getId
+    );
+
+    event LogClaimOnBehalf(
+        address recipient_,
+        uint256 cumulativeAmount,
+        address fToken,
+        uint256 cycle,
+        bytes32[] merkleProof,
+        uint256 getId
+    );
+}

contracts/mainnet/connectors/merkleDistributor/interface.sol

@@ -0,0 +1,12 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.8.2;
+
+interface IFluidMerkleDistributor {
+    function claim(
+        address recipient_,
+        uint256 cumulativeAmount_,
+        address fToken_,
+        uint256 cycle_,
+        bytes32[] calldata merkleProof_
+    ) external;
+}

contracts/mainnet/connectors/merkleDistributor/main.sol

@@ -0,0 +1,66 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.8.2;
+
+import { Basic } from "../../common/basic.sol";
+import { Events } from "./events.sol";
+import { IFluidMerkleDistributor } from "./interface.sol";
+
+abstract contract FluidMerkle is Basic, Events {
+
+    address private constant MERKLE_DISTRIBUTOR = address(0);
+    
+    /**
+     * @dev Claims rewards from Fluid merkle distributor contract
+     * @param cumulativeAmount_ Total reward cumulated since reward inception.
+     * @param fToken_ Address of fToken on which rewards are being distributed.
+     * @param cycle_ Current epoch cycle.
+     * @param merkleProof_ Merkle proof that validates this claim.
+     * @param getId_ Id to get the cumulative amount.
+     */
+    function claim(
+        uint256 cumulativeAmount_,
+        address fToken_,
+        uint256 cycle_,
+        bytes32[] calldata merkleProof_,
+        uint256 getId_
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        uint256 _amt = getUint(getId_, cumulativeAmount_);
+
+        IFluidMerkleDistributor distributorContract_ = IFluidMerkleDistributor(MERKLE_DISTRIBUTOR);
+
+        distributorContract_.claim(address(this), _amt, fToken_, cycle_, merkleProof_);
+
+        _eventName = "LogClaim(uint256,address,uint256,bytes32[],uint256)";
+        _eventParam = abi.encode(_amt, fToken_, cycle_, merkleProof_, getId_);
+    }
+
+    /**
+     * @dev Claims rewards from Fluid merkle distributor contract
+     * @param cumulativeAmount_ Total reward cumulated since reward inception.
+     * @param fToken_ Address of fToken on which rewards are being distributed.
+     * @param cycle_ Current epoch cycle.
+     * @param merkleProof_ Merkle proof that validates this claim.
+     * @param getId_ Id to get the cumulative amount.
+    */
+    function claimOnBehalf(
+        address recipient_,
+        uint256 cumulativeAmount_,
+        address fToken_,
+        uint256 cycle_,
+        bytes32[] calldata merkleProof_,
+        uint256 getId_
+    ) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        uint256 _amt = getUint(getId_, cumulativeAmount_);
+
+        IFluidMerkleDistributor distributorContract_ = IFluidMerkleDistributor(MERKLE_DISTRIBUTOR);
+
+        distributorContract_.claim(recipient_, _amt, fToken_, cycle_, merkleProof_);
+
+        _eventName = "LogClaimOnBehalf(address,uint256,address,uint256,bytes32[],uint256)";
+        _eventParam = abi.encode(recipient_, _amt, fToken_, cycle_, merkleProof_, getId_);
+    }
+}
+
+contract ConnectV2FluidMerkleClaim is FluidMerkle {
+    string public constant name = "Fluid-Merkle-v1.0";
+}