Added files required for migration

[NickSneo]

What does this PR do?

Adds files required for migration.
Refer to this - https://toc.hyperledger.org/guidelines/repository-structure.html

Where should the reviewer start?

review all files

Why is it needed?

For migration of web3j into hyperledger

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.22%. Comparing base (ccfef8b) to head (1610f4e).
Report is 3 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2011      +/-   ##
============================================
- Coverage     69.22%   69.22%   -0.01%     
  Complexity     3117     3117              
============================================
  Files           493      493              
  Lines         13090    13093       +3     
  Branches       1692     1692              
============================================
+ Hits           9062     9064       +2     
- Misses         3537     3538       +1     
  Partials        491      491              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.