The agent should track Constructor methods

[Mael-Schiemsky]

The agent needs to track constructor methods in the objectives to create a more precise execution flow.

[Mael-Schiemsky]

In AgentMain,

when we set the methodMatcher to track constructors and methods with:
ElementMatcher.Junction methodMatcher = isMethod().or(isConstructor());

we get this error:
java.lang.IllegalStateException: Cannot catch exception during constructor call

The reason is: constructors are not compatible with the parameter onThrowable from Advice.onMethodExit inside FlowAdvice.

To handle it, one solution would be to create two different Advice: the actual one and a second one specific to constructors that doesn't contain the parameter onThrowable.
However, this means when we have a constructor error, the execution flow only has the ENTER from this constructor but never the EXIT. In this way, the execution flow stack goes wrong.