Add delegatecall flag to properly detect delegatecalls

[jewei1997]

Describe your changes and provide context

Use an explicit flag in the precompile to detect a delegatecall which is set by the delegatecall opcode in go-ethereum.

Testing performed to validate your change

existing unit tests

[codecov]

Codecov Report

Attention: Patch coverage is 71.42857% with 4 lines in your changes missing coverage. Please review.

Project coverage is 61.07%. Comparing base (cfd8cec) to head (b232be0).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
precompiles/bank/bank.go	0.00%	0 Missing and 1 partial ⚠️
precompiles/gov/gov.go	0.00%	0 Missing and 1 partial ⚠️
precompiles/pointer/pointer.go	0.00%	0 Missing and 1 partial ⚠️
precompiles/wasmd/wasmd.go	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1856      +/-   ##
==========================================
- Coverage   61.11%   61.07%   -0.04%     
==========================================
  Files         261      261              
  Lines       23098    23100       +2     
==========================================
- Hits        14116    14108       -8     
- Misses       7986     7999      +13     
+ Partials      996      993       -3     

Flag	Coverage Δ
	61.07% <71.42%> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
precompiles/common/precompiles.go	51.82% <100.00%> (+0.59%)	⬆️
precompiles/distribution/distribution.go	83.25% <100.00%> (ø)
precompiles/ibc/ibc.go	46.77% <100.00%> (ø)
precompiles/staking/staking.go	70.62% <100.00%> (ø)
precompiles/bank/bank.go	55.60% <0.00%> (ø)
precompiles/gov/gov.go	61.84% <0.00%> (ø)
precompiles/pointer/pointer.go	36.00% <0.00%> (ø)
precompiles/wasmd/wasmd.go	60.62% <75.00%> (ø)

... and 2 files with indirect coverage changes

[codchen]

In wasmd precompile can we also change for ExecuteBatch and Instantiate? also can we change to use this flag for these precompiles?

• bank
• distribution
• gov
• ibc
• pointer
• staking