fix todo list from original repository

[v4uL780y]

./token/methods.go:115: // TODO - check if it may be helpful in business logic
./core/swap.go:185: // TODO https://gitlab.n-t.io/core/management/support/-/issues/394#note_322657 PFI
./mock/stub/mock_stub.go:46: // TODO if a chaincode uses recursion this may need to be a stack of TxIDs or possibly a reference counting map
./mock/stub/mock_stub.go:199: // TODO implement me
./mock/stub/mock_stub.go:456: // TODO "args" here should possibly be a serialized pb.ChaincodeInput
./test/unit/accessmatrix_test.go:136: // TODO need check empty address & bad address string