apply transitions verification to built project

[Denire]

Bug description:
We have a verification method to check if all transitions are correct and lead to existing states. The problem is that if we have non-isolated scenarios with cross-dependencies we cannot verify fromState transitions as these states are in separate scenario.

Example scenario with bug:

val NotIsolatedScenario = Scenario {
    state("second") {
        activators(fromState = "/first") { // fails verification 
            regex("ok")
        }
    }
}
val BugScenario = Scenario(telephony) {
    append(NotIsolatedScenario)
    state("first") {
        activators(fromState = "/second") {
            regex("ok")
        }
    }
}
fun main(args: Array<String>) {
    BotEngine(BugScenario)
}

Solution:
Execute verification only on complete ScenarioModel.