Map Rotation

Automatic scenario rotation for dedicated servers.

You give it a list of scenarios. When one ends, the server loads the
next one. The server process is never restarted, so your server never
drops out of the server browser.

Works with any scenario that uses a normal game mode: Conflict, Game
Master, Combat Ops, Capture & Hold, Scenario Framework and modded
scenarios. No scenario edits and no Workbench needed to set it up.

SETUP
1. Add this mod to the "mods" list in your server config.
2. Start the server once. It writes MapRotation.json into your server
   profile folder, already filled in with the scenario you are running,
   and logs the path. This first start does not rotate - that is normal.
3. Add the rest of your scenarios to that file, in play order, and
   restart the server.

SETTINGS (MapRotation.json)
  scenarios                your scenario IDs, in play order
  loop                     wrap to the first entry after the last
  randomize                pick a random other entry instead of in order
  forceRotateAfterMinutes  rotate on a timer for open-ended modes
  switchHoldSeconds        seconds the result stays on screen (default 8)
  announceSwitch           warn players in chat before the change
  switchMessage            the chat line that is sent
  preserveAddons           carry the loaded mods into the next scenario
  addonListOverride        exact addon GUID list, if the derived one is wrong

WHAT PLAYERS SEE
Scenarios on the SAME world carry players straight through with no
interruption at all.

Moving to a scenario on a DIFFERENT world drops every player for up to
a minute while their client rejoins on its own. Arma shows its generic
"Internal error has occurred" dialog, and players may see a short queue
screen even on an empty server, because the server reserves each slot
for 60 seconds and the client rejoins through the reconnection queue.
That is engine behaviour and no setting here changes it - so the mod
replaces the end-of-round screen's closing line with an explanation of
what is about to happen, and warns in chat beforehand.

For a rotation with no interruption whatsoever, build the list from
scenarios that all use the same world.