Add info fetching

[ivaylo-iliev-akelius]

Would be great if runtime statistics can be shown.

Example info can include:

• number of instances
• list of all instances (???)
• memory of all instances / total memory
• memory for each of the instances (???)
• dependency graph (which instance depends on which) (???)

[ranapat]

Memory of each instance needs external libraries - it will make things more complicated. And adding static jars inside is not nice also.

Dependency graph is similar - the runtime dependencies need reflections and you cannot even catch the runtime local scoped ones.

So for now will leave those out.