feat(precompiles): add BalanceHandler to handle native balance change

[cloudgray]

Description

By tracking native balance changes from SDK events, native balance changes that occur during the execution of a precompile method are accurately handled.

• Add balance handler that records native balance change events and calls stateDB.AddBalance / stateDB.SubBalance.
• Call balance handler methods (BeforeBalanceChange / AfterBalanceChange) before and after precompile execution.

Closes: #185

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