Add "pangolin" release team

[christian-rauch]

• Name of the new release team: pangolin

• Release repositories to add:

  • Pangolin
    • ros/rosdistro source entry
    • There is an existing release repository which should be imported:

• Team members

  • @christian-rauch (https://github.com/stevenlovegrove/Pangolin/blob/master/package.xml)

[clalancette]

One minor thing that I think would help here is to add yourself to the maintainers list in https://github.com/stevenlovegrove/Pangolin/blob/master/package.xml (that would just give us additional confidence that you are indeed one of the maintainers).

But that isn't blocking here, so this looks good to me.