refactor: put oracles in sub folders

Author: MathisGD

src/ChainlinkOracle.sol renamed to src/morpho-chainlink-v1/ChainlinkOracle.sol

@@ -2,12 +2,12 @@
 pragma solidity 0.8.21;
 
 import {IChainlinkOracle} from "./interfaces/IChainlinkOracle.sol";
-import {IOracle} from "../lib/morpho-blue/src/interfaces/IOracle.sol";
+import {IOracle} from "../../lib/morpho-blue/src/interfaces/IOracle.sol";
 
 import {AggregatorV3Interface, ChainlinkDataFeedLib} from "./libraries/ChainlinkDataFeedLib.sol";
 import {IERC4626, VaultLib} from "./libraries/VaultLib.sol";
 import {ErrorsLib} from "./libraries/ErrorsLib.sol";
-import {Math} from "../lib/openzeppelin-contracts/contracts/utils/math/Math.sol";
+import {Math} from "../../lib/openzeppelin-contracts/contracts/utils/math/Math.sol";
 
 /// @title ChainlinkOracle
 /// @author Morpho Labs

src/interfaces/AggregatorV3Interface.sol renamed to src/morpho-chainlink-v1/interfaces/AggregatorV3Interface.sol

@@ -3,7 +3,7 @@ pragma solidity >=0.5.0;
 
 import {IERC4626} from "./IERC4626.sol";
 import {AggregatorV3Interface} from "./AggregatorV3Interface.sol";
-import {IOracle} from "../../lib/morpho-blue/src/interfaces/IOracle.sol";
+import {IOracle} from "../../../lib/morpho-blue/src/interfaces/IOracle.sol";
 
 /// @title IChainlinkOracle
 /// @author Morpho Labs

src/interfaces/IChainlinkOracle.sol renamed to src/morpho-chainlink-v1/interfaces/IChainlinkOracle.sol

@@ -14,7 +14,4 @@ library ErrorsLib {
 
     /// @notice Thrown when the vault conversion sample is not 1 while vault = address(0).
     string constant VAULT_CONVERSION_SAMPLE_IS_NOT_ONE = "vault conversion sample is not one";
-
-    /// @notice Thrown when the zero address is passed as argument.
-    string constant ZERO_ADDRESS = "zero address";
 }

src/interfaces/IERC4626.sol renamed to src/morpho-chainlink-v1/interfaces/IERC4626.sol

@@ -1,10 +1,10 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 pragma solidity 0.8.21;
 
-import {IWstEth} from "../interfaces/IWstEth.sol";
-import {MinimalAggregatorV3Interface} from "../interfaces/MinimalAggregatorV3Interface.sol";
+import {IWstEth} from "./interfaces/IWstEth.sol";
+import {MinimalAggregatorV3Interface} from "./interfaces/MinimalAggregatorV3Interface.sol";
 
-import {ErrorsLib} from "../libraries/ErrorsLib.sol";
+import {ErrorsLib} from "./libraries/ErrorsLib.sol";
 
 /// @title WstEthEthExchangeRateChainlinkAdapter
 /// @author Morpho Labs