update position manager skeleton with liquidity management file

contracts/NonfungiblePositionManagerV4.sol

@@ -65,8 +65,6 @@ contract NonfungiblePositionManagerV4 is
     /// @dev The address of the token descriptor contract, which handles generating token URIs for position tokens
     address private immutable _tokenDescriptor;
 
-    // TODO: does it still need WETH address in the constructor here?
-    // TODO: use ERC721Permit2 here
     constructor(IPoolManager _poolManager, address _tokenDescriptor_)
         PeripheryImmutableState(_poolManager)
         ERC721("Uniswap V4 Positions NFT-V1", "UNI-V4-POS")
@@ -113,10 +111,6 @@ contract NonfungiblePositionManagerV4 is
         );
     }
 
-    function lockAcquired(bytes calldata rawData) external returns (bytes memory) {
-        // TODO: implement this
-    }
-
     /// @inheritdoc INonfungiblePositionManagerV4
     function createAndInitializePoolIfNecessary(PoolKey memory poolkey, uint160 sqrtPriceX96, bytes memory initData)
         external
@@ -134,6 +128,7 @@ contract NonfungiblePositionManagerV4 is
         returns (uint256 tokenId, uint128 liquidity, uint256 amount0, uint256 amount1)
     {
         // TODO: implement this
+        // will do something like return mintEntry(params)
     }
 
     modifier isAuthorizedForToken(uint256 tokenId) {

contracts/base/LiquidityManagement.sol

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.19;
+
+import {BalanceDelta} from "@uniswap/v4-core/contracts/types/BalanceDelta.sol";
+import {ILockCallback} from "@uniswap/v4-core/contracts/interfaces/callback//ILockCallback.sol";
+import {IPeripheryPayments} from "../interfaces/IPeripheryPayments.sol";
+import {ILiquidityManagement} from "../interfaces/ILiquidityManagement.sol";
+import {PeripheryImmutableState} from "./PeripheryImmutableState.sol";
+
+abstract contract LiquidityManagement is ILockCallback, ILiquidityManagement, PeripheryImmutableState {
+    function mintEntry(MintParams memory params)
+        internal
+        returns (uint256 tokenId, uint128 liquidity, BalanceDelta delta)
+    {
+        // poolManager.lock call here
+    }
+
+    function lockAcquired(bytes calldata rawData) external override returns (bytes memory) {
+        // TODO: handle mint/add liquidity here
+        return abi.encode(0);
+    }
+}

contracts/interfaces/ILiquidityManagement.sol

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.19;
+
+import {ILockCallback} from "@uniswap/v4-core/contracts/interfaces/callback//ILockCallback.sol";
+import {PoolKey} from "@uniswap/v4-core/contracts/types/PoolKey.sol";
+
+interface ILiquidityManagement is ILockCallback {
+    struct MintParams {
+        PoolKey poolKey;
+        int24 tickLower;
+        int24 tickUpper;
+        uint256 amount0Desired;
+        uint256 amount1Desired;
+        uint256 amount0Min;
+        uint256 amount1Min;
+        address recipient;
+        uint256 deadline;
+        bytes hookData;
+    }
+}

contracts/interfaces/INonfungiblePositionManagerV4.sol

@@ -3,18 +3,18 @@ pragma solidity ^0.8.19;
 
 import {IERC721Metadata} from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
 import {IERC721Enumerable} from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol";
-import {ILockCallback} from "@uniswap/v4-core/contracts/interfaces/callback//ILockCallback.sol";
 import {PoolKey} from "@uniswap/v4-core/contracts/types/PoolKey.sol";
 import {Currency} from "@uniswap/v4-core/contracts/types/Currency.sol";
 
 import {IPeripheryPayments} from "./IPeripheryPayments.sol";
+import {ILiquidityManagement} from "./ILiquidityManagement.sol";
 import {IPeripheryImmutableState} from "./IPeripheryImmutableState.sol";
 
 /// @title Non-fungible token for positions
 /// @notice Wraps Uniswap V4 positions in a non-fungible token interface which allows for them to be transferred
 /// and authorized.
 interface INonfungiblePositionManagerV4 is
-    ILockCallback,
+    ILiquidityManagement,
     IPeripheryPayments,
     IPeripheryImmutableState,
     IERC721Metadata,
@@ -82,18 +82,6 @@ interface INonfungiblePositionManagerV4 is
             uint128 tokensOwed1
         );
 
-    struct MintParams {
-        PoolKey poolKey;
-        int24 tickLower;
-        int24 tickUpper;
-        uint256 amount0Desired;
-        uint256 amount1Desired;
-        uint256 amount0Min;
-        uint256 amount1Min;
-        address recipient;
-        uint256 deadline;
-    }
-
     /// @notice Creates a new position wrapped in a NFT
     /// @dev Call this when the pool does exist and is initialized. Note that if the pool is created but not initialized
     /// a method does not exist, i.e. the pool is assumed to be initialized.