Release caver-js v1.9.0

[jimni1222]

JSON RPC Layer
Add effectiveGasPrice field to the return object of caver.rpc.klay.getTransactionReceipt

Transaction Layer
Implement tx.getSuggestedGasPrice → Depends on hard fork, returns suggested gas price

Modify optional field setting logic
(Before KIP-71 Hardfork) header.baseFeePerGas === undefined || header.baseFeePerGas =< 0

• tx.type == EthereumDynamicFeeTx
  • maxPriorityFeePerGas === undefined → set with return value of caver.rpc.klay.getMaxPriorityFeePerGas
  • maxFeePerGas === undefined → set with return value of caver.rpc.klay.getGasPrice
• tx.type != EthereumDynamicFeeTx
  • gasPrice === undefined → set with return value of caver.rpc.klay.getGasPrice
    (After KIP-71 Hardfork) header.baseFeePerGas !== undefined || header.baseFeePerGas > 0
• tx.type === EthereumDynamicFeeTx
  • maxPriorityFeePerGas === undefined → set with return value of caver.rpc.klay.getMaxPriorityFeePerGas (Klaytn will ignore this)
  • maxFeePerGas → set with baseFee * 2
• tx.type != EthereumDynamicFeeTx
  • gasPrice === undefined → set with baseFee * 2
• Modify tx.fillTransaction logic for dynamic base fee → use tx.getSuggestedGasPrice

[jimni1222]

klaytn/klaytn-docs#456