Watching should reload the browser

[arctic-hen7]

This issue is requesting an enhancement to Perseus. Details of the scope will be available in issue labels.
The user described the problem related to this request as follows:

At the moment, Perseus' watching system can rebuild the app very effectively, but it doesn't reload the browser, which is inconvenient.

The user described the issue as follows:

When the -w/--watch flag is added to a supported CLI command, the CLI controller process should spawn an instructional server. Then, when we reload, that instructional server should be pushed a message ordering all listeners to reload. That server should be listened to over WebSocket by the app itself (through a feature flag to avoid unnecessary bloat, even though it's only in development). This could also be used to freeze the app's state as per #121 before a reload.

• The author is willing to attempt an implementation: true

Tribble internal data

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[arctic-hen7]

Note that this requires a large amount of complex work, and probably won't be ready for quite a while yet.

[arctic-hen7]

This is something like what we'll have to do here, for reference.

[arctic-hen7]

Okay, the server is set up and working from the CLI, and the necessary information for connecting is being successfully passed to the client. Now it's just a matter of listening in the browser, and then this should be fully functional!