Adapt testeth to be used with evmlab - part 1

[gumb0]

Addresses 5 out of 6 tasks in #5804

1. Add memSize field
2. Always output memory unless disabled; not only for memory-changing opcodes.
3. depth starts with 1
4. Rename op to opName and output opcode number in op
5. Output line with output, gasUsed, error after the execution

Examples of output:

> test/testeth -t GeneralStateTests -- --testfile /home/andrei/dev/sar00.json  --jsontrace {}
Test Case "customTestSuite": 
{"depth":"1","gas":"379000","gasCost":"3","memSize":0,"memory":[],"op":96,"opName":"PUSH1","pc":"0","stack":[],"storage":{"0x00":"0x03"}}
{"depth":"1","gas":"378997","gasCost":"3","memSize":0,"memory":[],"op":96,"opName":"PUSH1","pc":"2","stack":["0x00"]}
{"depth":"1","gas":"378994","gasCost":"3","memSize":0,"memory":[],"op":29,"opName":"SAR","pc":"4","stack":["0x00","0x00"]}
{"depth":"1","gas":"378991","gasCost":"3","memSize":0,"memory":[],"op":96,"opName":"PUSH1","pc":"5","stack":["0x00"]}
{"depth":"1","gas":"378988","gasCost":"0","memSize":0,"memory":[],"op":85,"opName":"SSTORE","pc":"7","stack":["0x00","0x00"]}
{"depth":"1","gas":"373988","gasCost":"0","memSize":0,"memory":[],"op":0,"opName":"STOP","pc":"8","stack":[],"storage":{}}
{"output": "", "gasUsed": "13006"}
{"stateRoot": "a4b37b548bc12ee198ce885d83b511302d9d8f6b2ec5775618b3893c60e0dc75"}

*** No errors detected

> test/testeth -t GeneralStateTests -- --testfile /home/andrei/dev/randomStatetestmartin-Wed_10_02_29-14338-0.json  --jsontrace {}
Test Case "customTestSuite": 
{"depth":"1","gas":"2956484","gasCost":"1","memSize":0,"memory":[],"op":91,"opName":"JUMPDEST","pc":"0","stack":[],"storage":{}}
{"depth":"1","gas":"2956483","gasCost":"2","memSize":0,"memory":[],"op":61,"opName":"RETURNDATASIZE","pc":"1","stack":[]}
{"depth":"1","gas":"2956481","gasCost":"2","memSize":0,"memory":[],"op":48,"opName":"ADDRESS","pc":"2","stack":["0x00"]}
{"depth":"1","gas":"2956479","gasCost":"3","memSize":0,"memory":[],"op":172,"opName":"PUSHC","pc":"3","stack":["0x00","0xc94f5374fce5edbc8e2a8697c15331677e6ebf0b"]}
{"depth":"1","gas":"2956476","gasCost":"3","memSize":0,"memory":[],"op":172,"opName":"PUSHC","pc":"30","stack":["0x00","0xc94f5374fce5edbc8e2a8697c15331677e6ebf0b","0xc940b5f2046740058558468f238b85db7f6bbe3f3d51e92a3e32"]}
{"depth":"1","gas":"2956473","gasCost":"3","memSize":0,"memory":[],"op":83,"opName":"MSTORE8","pc":"40","stack":["0x00","0xc94f5374fce5edbc8e2a8697c15331677e6ebf0b","0xc940b5f2046740058558468f238b85db7f6bbe3f3d51e92a3e32","0xb7f7c4147541c695f3"]}
{"output": "", "gasUsed": "3000000", "error": "OutOfGas"}
{"stateRoot": "a2b3391f7a85bf1ad08dc541a1b99da3c591c156351391f26ec88c557ff12134"}

*** No errors detected

Output of geth's evm for comparison: https://github.com/holiman/goevmlab/blob/master/evms/testdata/statetest1_geth_stderr.jsonl

[codecov-io]

Codecov Report

Merging #5837 into master will decrease coverage by 0.02%.
The diff coverage is 50%.

@@            Coverage Diff             @@
##           master    #5837      +/-   ##
==========================================
- Coverage    64.1%   64.08%   -0.03%     
==========================================
  Files         362      362              
  Lines       30903    30906       +3     
  Branches     3429     3432       +3     
==========================================
- Hits        19811    19806       -5     
- Misses       9865     9871       +6     
- Partials     1227     1229       +2