Fallible version of Runtime::init function

[phil-opp]

Right now the only way to initialize a Runtime is through the init function. This function blocks until it establishes a connection to the RouDi daemon, or terminates the whole process on a timeout. This is not desired for robust applications, so it would be good to also have a try_init(app_name) -> Result function that just returns an error in this case. Ideally, the wait timeout would also be configurable.

[elBoberido]

@phil-opp I did not get notifications for the issue. It seems I have to adjust the my settings.

I think in order to make this work some changes in iceoryx itself are required. I think something like this would be valuable.