[Feature request] Configurable commands for before & start of loadshedding

[nikspyratos]

Having configurable pre-loadshedding and start-of-loadshedding commands the user can enter to run. The use case is for e.g. game servers to be able to issue server warning messages to players that a server will shut down, and save game state instead of relying on autosave.

Prime example is homebrew Minecraft and source engine games, which use rcon commands for managing the server and sending chat messages. In this case, something that might make sense would be:

• 20min before, issue a server message "Loadshedding in 20 minutes"
• 5min before, issue a stop command that will shut down the server (in Minecraft this also saves the world)

[github-actions]

This issue is stale because it has been open for 30 days with no activity.