Retry mining transactions

[syntrust]

Apply Optimism's txmgr to retry mining transactions.
The basic idea is to retry a tx with an updated gas fee cap and tip (at least 10% up) if it is pending until successfully confirmed or timed out.

The txmgr.go file has been modified to add profit check logic. The other 2 files remain untouched.
The original source can be found at https://github.com/ethereum-optimism/optimism/tree/v1.4.2/op-service/txmgr

The following log demonstrates the process of a transaction that has been dropped after bumping the gas price:

t=2024-06-21T13:33:56+0800 lvl=info msg="Creating tx"                           service=miner to=0x90381C3Bc1c44083088dBa915E444f92F880D280 from=0x471977571aD818379E2b6CC37792a5EaC85FdE22
t=2024-06-21T13:33:57+0800 lvl=info msg="Querying mining reward"                shard=0 block=6,152,658
t=2024-06-21T13:33:57+0800 lvl=info msg="Estimated reward and cost (in ether)"  reward=3.4605957e-10   cost=1.706535397e-06 profit=-1.706189337e-06
t=2024-06-21T13:33:57+0800 lvl=info msg="Publishing transaction"                service=miner hash=0xf5b387b213ebc3e81818cc60e929f702aec7f2806cc85f0907e12ab4026bfd68 nonce=643       gasTipCap=3,529,359 gasFeeCap=4,789,543
t=2024-06-21T13:33:57+0800 lvl=info msg="Transaction published"                 service=miner hash=0xf5b387b213ebc3e81818cc60e929f702aec7f2806cc85f0907e12ab4026bfd68 nonce=643       gasTipCap=3,529,359 gasFeeCap=4,789,543
t=2024-06-21T13:34:21+0800 lvl=info msg="Publishing transaction"                service=miner hash=0xf5b387b213ebc3e81818cc60e929f702aec7f2806cc85f0907e12ab4026bfd68 nonce=643       gasTipCap=3,529,359 gasFeeCap=4,789,543
t=2024-06-21T13:34:21+0800 lvl=info msg="bumping gas price for tx"              service=miner hash=0xf5b387b213ebc3e81818cc60e929f702aec7f2806cc85f0907e12ab4026bfd68 gasTipCap=3,529,359 gasFeeCap=4,789,543 gaslimit=410,279
t=2024-06-21T13:34:23+0800 lvl=info msg="re-estimated gas differs"              service=miner oldgas=410,279 newgas=374,454 gasFeeCap=5,268,498 gasTipCap=3,882,295
t=2024-06-21T13:34:23+0800 lvl=info msg="Querying mining reward"                shard=0 block=6,152,658
t=2024-06-21T13:34:23+0800 lvl=info msg="Estimated reward and cost (in ether)"  reward=3.4605957e-10   cost=3.426551042e-06 profit=-3.426204982e-06
t=2024-06-21T13:34:23+0800 lvl=warn msg="The tx is dropped: the profit will not meet expectation" profitEstimated=-3,426,204,982,452 minimumProfit=-3,000,000,000,000
t=2024-06-21T13:34:23+0800 lvl=warn msg="bumping gas price will not work"              service=miner bumpedTip=3,882,295 bumpedFee=5,268,498 err="meet drop criteria"
t=2024-06-21T13:34:23+0800 lvl=warn msg="Transaction dropped"                   service=miner hash=0xf5b387b213ebc3e81818cc60e929f702aec7f2806cc85f0907e12ab4026bfd68 nonce=643       gasTipCap=3,529,359 gasFeeCap=4,789,543 err="meet drop criteria"

[syntrust]

Lower priority since #289 may reduce the chances of dropping a tx.