[WIP] rclcpp design

[Theosakamg]

Need to remove my Travis and Readme.

• Packages node, services, topics...
• New c/JNI message generator:
• fixed Char converter
• fixed fixed array type
• fixed String array type
• JNI cache
• Documentation (JavaDoc)
• Add Logger ROS (not official)
• Add Parameter stack
• More tests
• Refactor JNI loading

[esteve]

@Theosakamg I'd love to merge your contributions, but unfortunately I can't merge this pull request as is. It's important that you split this into separate pull requests, here's a suggestion for how we could get there:

• rename your master branch to something else (e.g. master-Theosakamg in your repository) and clone (https://github.com/esteve/ros2_java/tree/master)
• identify one improvement you think could be merged easily into https://github.com/esteve/ros2_java/tree/master (for example, https://github.com/Theosakamg/ros2_java/blob/ec402f583e3e054905cc4778f8d26cfdb5379dd9/rosidl_generator_java/resource/msg_support.entry_point.cpp.template#L355-L363 in esteve@ec402f5)
• create a branch with just that one change and submit a pull request for it
• I'll accept the pull request and merge it.

I haven't heard from you since you created this pull request, but you have continued to push changes, so I'm really happy that you're still interested in ros2_java ☺️

[esteve]

@Theosakamg ping. It's been 20 days since you submitted this pull request, but haven't heard from you and I don't know whether you plan to act on the feedback I gave you. What should I do with this pull request? Should I close it or wait?

[Theosakamg]

@esteve sorry for the delay. I rename to WIP. more info => https://github.com/ros2java/design/issues/1#issuecomment-261808345