CLI should complain if it notices that conf.yaml has been edited

[bitspittle]

This should either tell the user that they should consider restarting OR offer to stop and restart for the user themselves.

The simpler one would be the former:

Kobweb server is running at http://localhost:8080 (PID = 1234)

Press Q anytime to stop the server.

<yellow>.kobweb/conf.yaml has been edited. Changes won't take effect until server has been stopped and restarted.</yellow>

or the latter:

<yellow>.kobweb/conf.yaml has been edited. Changes won't take effect until server has been stopped and restarted. Press R to restart the server.</yellow>