Intercom: invocations crashes after failed init

[elgatovital]

Problem

3rd party contributors are not in possession of Intercom api keys - > Intercom lib cannot be initialised successfully. Every intercom call crashes the app.

Solution

wrap intercom invocations to prevent app crashes. App should be usable with or without initialised Intercom library as it is not a crucial part of it.

[liliya-soroka]

checking with Viatly - verified