Introduce API to Programmatically Restart Karma

[jginsburgn]

There should be an API to programmatically restart Karma.

@devoto13 What do you think?

[devoto13]

@jginsburgn What exactly do you mean by "restart Karma"? Is it restart a test run? Restart a browser? Restart the whole server? What is the use case? A bit hard to comment on this without more information.

[jginsburgn]

I clarified the use case with one of our users: they want Karma to reload its configuration.

[devoto13]

Not sure if we can implement a generic configuration reload with the current Karma architecture in a reasonable effort. If the idea is to simply restart Karma whenever a config file changes it should be pretty trivial to implement using the programmatic API: watch config file for changes and re-create Karma server whenever change is found.