Start dev shows "dev running" state while it is still starting

[lgrossma]

On MacOS after #2607 was closed when trying to "Start dev" the state is immediately "dev running" even though the console output in terminal is not finished.

[dgolovin]

This works 'as expected'. odo dev has no mechanism to notify client what is going on. As soon as 'odo dev' child process started it is considered as 'running'. We can do stdout parsing and try to detect when component is ready, but that is not going to be reliable based on our experience of running odo dev in different usecases.

[lgrossma]

I see.. I reported this because yesterday and last testing I was able to see "dev starting" state before "dev running" showed up

[datho7561]

I think this should be fixed in #3065. I added code to read the output of odo, and only update the component to "running" in the sidebar when the prompt about using Ctrl+C stop the application appears.