Idk if something like this exists
#Integration with discord - start/stop server with a bot
hybrid wraith
vapid quiver
I can't answer your question, but let's think a moment about your "in case" statement.
If the server crashes, it will automatically restart (it's baked in to the Bisect setup). If it crashes again within a short time (iirc 60 seconds), then the Bisect setup will flag the server as having a problem and will not attempt to restart it. This is reasonable: if the server is so messed up that it instantly crashes, then some person with server admin rights needs to come investigate. You wouldn't want someone with "Discord start rights" to attempt to restart the server in this case.
If the server shuts down, that implies some person did this. The most common case is someone with server admin rights is making a configuration change (like adding a mod, or changing a server variable). You wouldn't want someone with "Discord start rights" to attempt to restart the server in this case.