chore: update staking interface contract

precompiles/staking/StakingInterface.sol

@@ -5,9 +5,7 @@ pragma solidity >=0.8.3;
 address constant STAKING_ADDRESS = 0x0000000000000000000000000000000000000800;
 
 /// @dev The Staking contract's instance.
-Staking constant STAKING_CONTRACT = Staking(
-    STAKING_ADDRESS
-);
+Staking constant STAKING_CONTRACT = Staking(STAKING_ADDRESS);
 
 /// @title Pallet Staking Interface
 /// @dev The interface through which solidity contracts will interact with Staking pALLET
@@ -16,19 +14,19 @@ Staking constant STAKING_CONTRACT = Staking(
 /// @custom:address 0x0000000000000000000000000000000000000800
 interface Staking {
     /// @dev Get current era
-    /// @return era 
+    /// @return era
     function currentEra() external view returns (uint32);
 
     /// @dev Get min nominator bond
-    /// @return min nominator bond 
+    /// @return min nominator bond
     function minNominatorBond() external view returns (uint256);
 
     /// @dev Get min validator bond
-    /// @return min validator bond  
+    /// @return min validator bond
     function minValidatorBond() external view returns (uint256);
 
     /// @dev Min Active stake
-    /// @return min active stake  
+    /// @return min active stake
     function minActiveStake() external view returns (uint256);
 
     /// @dev Validator count
@@ -58,4 +56,43 @@ interface Staking {
     /// @return Total stake in era.
     function erasTotalStake(uint32 eraIndex) external view returns (uint256);
 
+    /// @dev Nominate a set of validators.
+    /// @param targets Array of validators' addresses to nominate.
+    function nominate(bytes32[] calldata targets) external;
+
+    /// @dev Bond tokens for staking.
+    /// @param value Amount of tokens to bond.
+    /// @param payee Address to receive staking rewards.
+    function bond(uint256 value, bytes32 payee) external;
+
+    /// @dev Bond additional tokens for staking.
+    /// @param maxAdditional Amount of additional tokens to bond.
+    function bondExtra(uint256 maxAdditional) external;
+
+    /// @dev Unbond a portion of the staked tokens.
+    /// @param value Amount of tokens to unbond.
+    function unbond(uint256 value) external;
+
+    /// @dev Withdraw unbonded tokens after the unbonding period.
+    /// @param numSlashingSpans Number of slashing spans for a validator.
+    function withdrawUnbonded(uint32 numSlashingSpans) external;
+
+    /// @dev Stop nominating and become inactive in staking.
+    function chill() external;
+
+    /// @dev Set the reward destination for staking rewards.
+    /// @param payee The reward destination type (0-Staked, 1-Stash, 2-Controller).
+    function setPayee(uint8 payee) external;
+
+    /// @dev (Re-)set the controller to the stash.
+    function setController() external;
+
+    /// @dev Trigger payout for a validator and era.
+    /// @param validatorStash The stash address of the validator.
+    /// @param era The era index for which to trigger the payout.
+    function payoutStakers(bytes32 validatorStash, uint32 era) external;
+
+    /// @dev Rebond a portion of the unbonded tokens.
+    /// @param value Amount of tokens to rebond.
+    function rebond(uint256 value) external;
 }