Write preimages and EVM state into erigon table

[cyberbono3]

This PR is part of my ongoing work of erigon integration. I would appreciate if you can review it and give a feedback. This setup works on my private server. It introduces following functionality:

1. Write mainnet preimages into erigon kv.Sender table ./build/opera preimages write.

INFO [10-18|13:42:05.582] Opening Database                         module=mdbx label=txpool path=/root/.opera/erigon/txpool
INFO [10-18|13:42:05.584] Reading preimages                        from file=/root/preimages/preimages.gz
INFO [10-18|13:42:05.584] Writing preimages to buf 
INFO [10-18|13:45:50.318] Reading preimages and writing preimages to buf completed elapsed=3m44.733s
INFO [10-18|13:45:50.318] Buffer length                            is=143,168,825
INFO [10-18|13:45:50.318] Sorting data in buffer started... 
INFO [10-18|13:51:43.455] Sorting data in buf completed            elapsed=5m53.136s
INFO [10-18|13:51:43.455] Iterate over sorted non duplicated buf key-value pairs and write them into=TxSender
INFO [10-18|13:52:29.753] Writing data into table from sorted buffer completed Number of records written=143,168,825 elapsed=46.297s
INFO [10-18|13:52:37.581] Writing preimages is complete            elapsed=10m31.999s

2. Take mainnnet snapshot, loop over EVM accounts and write them into kv.PlainState table ./build/opera erigon write

INFO [10-18|13:56:18.435] Writing of EVM accounts into Erigon database started 
INFO [10-18|13:56:18.435] Opening Database                         module=mdbx label=txpool path=/root/.opera/erigon/txpool
INFO [10-18|13:56:18.435] Maximum peer count                       total=50
INFO [10-18|13:56:18.436] Smartcard socket not found, disabling    err="stat /run/pcscd/pcscd.comm: no such file or directory"
INFO [10-18|13:56:19.946] Getting EvmDb 
INFO [10-18|13:56:19.946] Getting FinalizedStateRoot 
INFO [10-18|13:56:19.946] Getting LastBlock 
INFO [10-18|13:56:19.946] Generate Erigon Plain State... 
INFO [10-18|13:56:19.947] Snapshot traversal started               root=0xfa2ea1380a1c3d1cc4c661b360cb00244351792c6ddc794e2f1bdd32811c01de
INFO [10-18|13:58:37.242] Snapshot traversal is complete           accounts=2,368,652 elapsed=2m17.295s missingContractCode=0
INFO [10-18|13:58:37.242] Valid                                    Contract accounts: =183,325 Storage records=151,099,089 Valid non contract accounts=2,110,884 invalid accounts1=0 invalid accounts2=74443
INFO [10-18|13:58:37.242] Buffer length                            is=153,467,741
INFO [10-18|13:58:37.242] Sorting data in buffer started... 
INFO [10-18|14:05:15.289] Sorting data is complete                 elapsed=6m38.046s
INFO [10-18|14:05:15.289] Iterate over sorted non duplicated buf key-value pairs and write them into=PlainState
INFO [10-18|14:06:37.484] Writing data into table from sorted buffer completed Number of records written=153,467,741 elapsed=1m22.195s
INFO [10-18|14:06:45.202] Writing data into erigon PlainState is complete elapsed=1m29.913s
INFO [10-18|14:06:45.202] Generation of Erigon Plain State is complete elapsed=10m26.767s