[move] Add printout of input commands in transactional test runner

[tzakian]

Description

Adds a printout of the command run in the expected files for the Move transactional test runner, and also adds a way for custom subcommands to change this (and this is then used for PTBs in transactional tests).

The bottom commit contains the actual changes, and the top commit contains all of the changes to expected value files.

Test plan

Update existing tests with the new output.