⚠️ aio cli cannot support multiple sub-command separater - colons or spaces, pick one

[purplecabbage]

The aio-cli used to be a bit more forgiving with the use of spaces or colons to separate subcommands.

for example, these used to all do the same thing:

1. aio runtime action update
2. aio runtime action:update
3. aio runtime:action update
4. aio runtime:action:update

With our semi-recent (fall 2022) update to oclif2, we now only support 1+4 above.
2+3 will fail, sometimes in unexpected ways because it affects how parameters, and flags are interpreted.

⚠️ colons or spaces, pick one