feat: pos execution specs

[jhkimqd]

Description

• PoS specific tests similar to https://github.com/ethereum/execution-specs but with additional coverage for unrunnable tests from the execution-specs repo, like tests for Polygon Improvement Proposals.
• Intended to be run together with applicable tests in the execution-specs repo

Test Categories

• EVM opcodes & EIPs:
  • EIP-1153 (TSTORE/TLOAD)
  • EIP-6780 (SELFDESTRUCT)
  • EIP-5656 (MCOPY)
  • EIP-3855 (PUSH0)
  • EIP-145 (SHL/SHR/SAR) bitwise/shift/call ops
  • Cancun/Shanghai coverage
• Bor-specific behavior:
  • BLOCKHASH(0)
  • G_NEW_ACCOUNT skip
  • coinbase=0x0
  • min gas price
  • sprint timing
• Polygon PIPs:
  • PIP-6/58 (BaseFeeChangeDenominator)
  • PIP-11 (milestone finality)
  • PIP-16 (tx dependency extraData)
  • PIP-30 (32KB code size)
  • PIP-36 (replayFailedStateSync)
  • PIP-45 (MATIC→POL rename)
  • PIP-74 (StateSyncTx 0x7F)
• System contracts:
  • BorValidatorSet (0x1000)
  • StateReceiver (0x1001)
  • MRC20 (0x1010)
• RPC & stress:
  • method conformance
  • concurrent load
  • fuzz transactions
  • balance/nonce invariants
• Contract deployment:
  • creation edge cases
  • EIP-170/3860 code size limits
  • precompile discovery

[leovct]

lgtm