This allows to mix different verb implementations in a single
invocation, for example:
```
just build ql/rust ql/java
just test ql/rust/ql/test/some/test ql/rust/ql/integrartion-test/some other
```
If a common justfile recipe is found, it is used for all arguments in
one go. If on the other hand no common justfile recipe is found, each
argument is processed separately in sequence.
This does require that any flags passed are compatible with all recipes
involved (like is the case for `--learn` or `--codeql=built` for
language and integration tests).
