Separate tests into unit and integration directories (#441)

Moulrequested to merge
441_structure_tests into main
  • Introduce unit and integration directories
  • Move end_to_end to integration dir
  • Split blockchain/verify tests to unit and integration
  • Move unit tests to unit dir
  • Move money tests to unit directories
  • Move wot tests to unit and integration dirs
  • Only run unit tests in all Py jobs except 3.11
  • membership test: use Membership.__eq__()
  • Update end_to_end tests

Close #441 (closed).

Edited by Moul

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