add setBaseBorrowMin function

contracts/interfaces/ILending.sol

@@ -15,6 +15,7 @@ interface ILending {
     event BuyCollateral(address indexed buyer, address indexed asset, uint256 baseAmount, uint256 collateralAmount);
     event WithdrawReserves(address indexed to, uint256 amount);
     event TargetReservesUpdated(uint104 targetReserves);
+    event BaseBorrowMinUpdated(uint104 baseBorrowMin);
     
     error Unauthorized();
     error InsufficientBalance();
@@ -47,5 +48,5 @@ interface ILending {
     function getCollateralReserves(address asset) external view returns (uint256);
     function getUtilization() external view returns (uint256);
     function withdrawReserves(address to, uint256 amount) external;
-}
-
+    function setBaseBorrowMin(uint104 newBaseBorrowMin) external;
+}

contracts/ytLending/Lending.sol

@@ -100,6 +100,11 @@ contract Lending is
         emit TargetReservesUpdated(targetReserves);
     }
 
+    function setBaseBorrowMin(uint104 newBaseBorrowMin) external onlyOwner {
+        baseBorrowMin = newBaseBorrowMin;
+        emit BaseBorrowMinUpdated(baseBorrowMin);
+    }
+
     /**
      * @notice 计算累计利息后的索引（不修改状态）
      * @param timeElapsed 经过的时间
@@ -682,5 +687,4 @@ contract Lending is
      * 50个slot = 50 * 32 bytes = 1600 bytes
      */
     uint256[50] private __gap;
-}
-
+}