(chore): update events in L1 & L2 contracts

[viraj124]

We can make some updates to events in the L1 contracts, mainly to save gas on L1, the potential changes would be as follows:

• event FuelChainStateUpdated(address indexed sender, address indexed oldValue, address indexed newValue); can be updated to event FuelChainStateUpdated(address sender, address indexed oldValue, address indexed newValue); as only addresses with DEFAULT_ADMIN_ROLE can update the chain state contract, and addresses with that role are limited.

• event Deposit(bytes32 indexed sender, address indexed tokenAddress, uint256 amount); can be changed to event Deposit(bytes32 sender, address indexed tokenAddress, uint256 amount); to remove the number of indexed arguments and save gas.

• event Withdrawal(bytes32 indexed recipient, address indexed tokenAddress, uint256 amount); can be changed to event Withdrawal(bytes32 recipient, address indexed tokenAddress, uint256 amount); to remove the number of indexed arguments and save gas.

There is another update we can make to the L2 bridge contract events, which would be as follows:

• pub struct DepositEvent {pub amount: u64, pub from: b256, pub to: Identity} can be updated to pub struct DepositEvent {pub amount: u64, pub from: b256, pub to: Identity, pub token_id: b256} to add the deposited token id.

• pub struct WithdrawalEvent {pub amount: u64, pub from: b256, pub to: Identity} can be updated to pub struct WithdrawalEvent {pub amount: u64, pub from: b256, pub to: Identity, pub token_id: b256} to add the withdrawn token id.