--validate-signatures should not be a flag of the sign command
as the operation performed (transaction signatures verification)
is logically distinct.
cli_test is and has always been an horrible name for package
directory as it's very much Go anti-idiomatic - _test is the
suffix used by test packages, not directories. Plus, CLI test
cases can and should live alongside other testcases that don't
require binaries to be built beforehand. Thus:
x/module/client/cli_test/*.go -> x/module/client/cli/
Test files that require sim{cli,d} shall be tagged with // +build cli_test
With regard to cli test auxiliary functions, they should live in:
x/module/client/testutil/
Co-authored-by: Alexander Bezobchuk <alexanderbez@users.noreply.github.com>