Publish image and camera_info to the same namespace

[ajordan5]

Fixes: # 1 Now publishes camera_info to the same namespace as the corresponding namespace. For example, for a camera named 'bottom_center', the ros wrapper will publish .../bottom_center/Scene and .../bottom_center/camera_info

About

Previously these topics were published as: .../bottom_center/Scene and .../bottom_center/Scene/camera_info

Many ros packages expect the camera info to be in the same namespace as the image such as apriltag_ros. In the case of apriltag it cannot find the camera info and will not calculate pose information.

How Has This Been Tested?

I have run the airsim node in my own airsim environment that includes an apriltag on a moving platform. This new publishing format is indeed the format expected by apriltag_ros and correct pose info is calculated. I expect most other ROS interfaces will require the same.

Screenshots (if appropriate):

[zimmy87]

It seems that your PR is failing the clang-format check. Please follow these steps to resolve this:

1. check out your pull request
2. run git checkout master .clang-format in your repo's root folder
3. if you don't have npm installed, download it from https://www.npmjs.com/get-npm
4. run npm install -g clang-format
5. run clang-format -i path/to/file for each failing file (failing files can be found in the details for the clang-format check)
6. run git add -u to track all style changes
7. run git commit -am "apply style from clang-format"
8. run git merge master
9. resolve other non-style conflicts if you have any
10. push changes

Thanks for helping us with these style changes!

[dzywater]

I wanted to use one camera_info for one camera before.

But in settings.json, different image types can be configured different width/height/fov, so respective camera_info may be reasonable.

I don't how to get a good resolution.