* cannon: Multi VM executor

* fix run subcmd arg fwding

* fix mt prestate

* add list subcmd; multicannon in op-stack-go

* remove cannon-latest

* safer strconv

* lint

* include .gitkeep in embed

* fix .git copy

* add detect.go tests

* add nosemgrep

* review comments

* list filtering

* add note to MIPS.sol in version stf ref

* use fork-exec

* minimal flag parsing

* load old cannon binaries from docker images

* note

* --help flag defaults

* remove redundant copy from cannon-builder-0