Update to ROS2 Humble version

[clausqr]

Update to:

• KSP 1.12.5
• kRPC 0.5.2
• ROS2 Humble
• Ubuntu 22.04

Plus dockerization for easier installation.

[g0mb4]

Thanks for the update! I really like it, but I'd prefer to leave out Docker. The installation steps from Dockerfile shoud be in the README.

[clausqr]

Moved docker to a separate branch and removed debugging artifacts.

[g0mb4]

Thanks for the updates! Only one thing is missing form the updated readme: the installation of the updated GameData files.

The old step was this:

mkdir krpc; cd krpc
wget https://github.com/nullprofile/krpc/releases/download/0.4.9-1.12.1/krpc-0.4.9-1.12.1.zip
unzip krpc-0.4.9-1.12.1.zip

Copy the GameData/kRPC directory into the GameData directory of Kerbal Space Program.
The path can be obtained through Steam (Right Click->Manage->Browse local files).

I did not use the official repo, because I did not find precompiled GameData objects at the time.
Can you please find a precompiled kRPC 0.5.2 (or add insturctions on how to compile one)?