add missing rosdeps for minimal install

[nathanhhughes]

Fixes the fact that boost isn't installed with a barebones ros install

[Schmluk]

LGTM!

I think you mentioned this before, but is there still a reason to support boost fs over std::fs?

[nathanhhughes]

but is there still a reason to support boost fs over std::fs?

No, I used to be wary of std::filesystem support being available in the standard library, but now it's pretty universally supported so I only use the stl version.

The boost usage is actually tied to the external plugins because I didn't want to roll my own wrapper around dlopen (e.g. here) but could be an easy dependency to drop if we wanted to