Implement new HLM

[Flova]

Proposed changes

Refactors Humanoid League Msgs

Related issues

Necessary checks

• [ ] Update package version
• [x] Run catkin build
• [x] Write documentation
• [x] Create issues for future work
• [ ] Test on your machine
• [ ] Test on the robot
• [ ] Put the PR on our Project board

[jaagut]

#46 Needs to be merged first!

[jaagut]

Merging into refactor/hlm first...