Implement new control API

[danth]

This pull request adapts the launch manager (and tests) to use the new control API based on mw::com, and removes the old API.

Fixes #481.

[github-actions]

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INFO: Running command line: bazel-bin/license.check.license_check ./formatted.txt <args omitted>
usage: org.eclipse.dash.licenses.cli.Main [-batch <int>] [-cd <url>]
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[NicolasFussberger]

I would recommend to eventually move all the interaction handling with lmcontrol service and all the mw::com parts to a separate class and create an interface for the ProcessGroupManager class.

In case we want to exchange the underlying IPC implementation at some point it will be good if this is cleanly isolated in the code and e.g. the ProcessGroupManager does not need to be changed.

[NicolasFussberger]

I think all the code in Graph should only run on main thread to avoid the complexity of multi threaded code there.
One idea would be to post an event in the event queue when a request arrives so it can be processed on the main thread.
Then the result can be provided back to some "control" class that implements the mw::com communication