Add support for actor-language features to Dynamic Metrics tool

[smarr]

The goal of this PR is to improve the Dynamic Metric tool to be able to measure all actor-related language features.

Specifically, this means to measure:

• actor creation, and the polymorphism of the value from which actors are created
• message sends (to far refs and promises)
• polymorphism of the activated methods (num different receiver types, num different target methods, activation counts) from a message send (same metrics as for normal method dispatch)
• whether promises are captured, i.e., used, or simply ignored
• callbacks registered on promises, type of callback operation (whenResolved, onError, whenResolvedOnError)
• callback activations
• explicitly created promise pairs
• number of implicit promise resolutions (return from async message)
• number of explicit promise resolutions (Resolver>>#resolve:)
• number of promises created (implicit/explicit)
• turns executed in the benchmark

For later:

• promise chain length
• messages sent per turn
• number of turns per actor
• messages received, messages sent per actor

In addition to the main changes, the PR does some maintenance:

• add double support for AbsPrim 75a3df3
• avoid initialize TraceActorCreationNode if tracing is not enabled f21d959
• instead of relying on instrumentation, use simply a counting node to count direct call target activations
• fix breakpoint buttons not appearing in Kompos 352e0e6
• make object safepoint handling safer and more consistent dd07d87

This is not all that could be done. More work is tracked with #349.

[smarr]

@daumayr I am merging this, but have a look at for instance dd07d87 and f21d959 which may have an impact on you.