Allow exclusion of / ignoring of msg types

[norro]

Allow to exclude certain message types and/or packages from the rosbridge build. This could be done at cmake time, e.g., through cmake configuration options.

AFAIR, this can be helpful to:

• ignore message types that are not compatible between ROS 1 und ROS 2 or don't have a proper, therefore breaking the rosbridge build
• reduce rosbridge build time

[norro]

I think both a blacklist as well as a whitelist of types might be reasonable.
What do you think?

[clalancette]

Hi @norro ,

This sounds like a good enhancement to the bridge. Could you create a pull request implementing this feature? Thanks.

[norro]

Sure, I will give it a shot.

[norro]

I think a package blacklist/whitelist is more suited for the use-case of reducing build time, whereas a message blacklist/whitelist is more suited for the use-case of ignoring message types that are not compatible between ROS 1 und ROS 2.