issue a warning if an image of a different platform is running

[h4ck3rk3y]

Background & motivation

not all images publish on all architectures and sometimes there are failures and it isn't immediately clear that the container wasn't starting due to architecutre issues - not saying arm64 always fails on amd64 but sometimes it does; knowing that Kurtosis tried running a different platform than expected could help people debug

@galenmarchetti ran into this

Desired behaviour

We tell the user that we are attempting to start an arm64 image on an amd64 device and vice versa

How important is this to you?

Painful; the lack of this feature makes using Kurtosis frictionful.