It was reverted because `Verify` with arguments was not well supported
by the client software. Thanks to recent `System.Runtime.CurrentSigners`
call from neo-go v0.104.0 we can take the best of both worlds.
Verify with argument still looks better (less overhead), but this
implementation should work too. Sadly, `overloads` are not of much use
here because verification routines take the _first_ method from the
manifest, albeit with arbitrary number of arguments.
This reverts commit a0b73150c6 with some
changes on-top.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>