Add ghost role raffles (#26629)

* Add ghost role raffles

* GRR: Fix dialogue sizing, fix merge

* GRR: Add raffle deciders (winner picker)

* GRR: Make settings prototype based with option to override

* GRR: Use Raffles folder and namespace

* GRR: DataFieldify and TimeSpanify

* GRR: Don't actually DataFieldify HashSet<ICommonSession>s

* GRR: add GetGhostRoleCount() + docs

* update engine on branch

* Ghost role raffles: docs, fix window size, cleanup, etc

* GRR: Admin UI

* GRR: Admin UI: Display initial/max/ext of selected raffle settings proto

* GRR: Make a ton of roles raffled

Resources/Prototypes/GhostRoleRaffles/deciders.yml

@@ -0,0 +1,3 @@
+- type: ghostRoleRaffleDecider
+  id: default
+  decider: !type:RngGhostRoleRaffleDecider {}

Resources/Prototypes/GhostRoleRaffles/settings.yml

@@ -0,0 +1,15 @@
+# for important antag roles (nukie reinforcements, ninja, etc.)
+- type: ghostRoleRaffleSettings
+  id: default
+  settings:
+    initialDuration: 30
+    joinExtendsDurationBy: 10
+    maxDuration: 90
+
+# for roles that don't matter too much or are available plentifully (e.g. space carp)
+- type: ghostRoleRaffleSettings
+  id: short
+  settings:
+    initialDuration: 10
+    joinExtendsDurationBy: 5
+    maxDuration: 30