bug: Velocita CLI missing in base image

[doosuu]

pkg-velocitas-uprotocol/.devcontainer/devcontainer.json

Line 6 in d46d53d

"image": "mcr.microsoft.com/devcontainers/java:21-bullseye",

The devContainer image used for Java does not come with a pre-installed Velocitas CLI to update the project. Either a new image should be created or the CLI should be installed either via devContainer feature or post/onCreate script.