Pull Request Description

Related to #1153. Does not close it, because this is the first of two PRs.

This PR introduces the basic integration of Project Manager and Runtime Version Manager and implements handlers for most newly added protocol methods.

It does not however update the way how the Language Server is started, i.e. while other features use the new version management, with this PR the LS is still launched in the old way. As this is quite complex, that will be handled in the next PR.

Important Notes

• Due to Runtime Version Manager introducing our own logging service, but language server that we depend on (as above) uses logback, there are warnings about multiple available implementations. These warnings will go away with the second PR, as we will remove the dependency to language-server and so logback will go away from project-manager's classpath.
• Made mechanism for reporting status of TaskProgress and resource locks more general.

Checklist

Please include the following checklist in your PR:

• The documentation has been updated if necessary.
• All code conforms to the Scala, Java, and Rust style guides.
• All documentation and configuration conforms to the markdown and YAML style guides.
• All code has been tested where possible.