feat(state): add validated persistent game state

src/main/java/games/dmg/spigottyrant/TyrantUnlock.java

@@ -0,0 +1,10 @@
+package games.dmg.spigottyrant;
+
+public enum TyrantUnlock {
+    ASSASSIN,
+    FIXER,
+    TAMER,
+    ROSTER_INTELLIGENCE,
+    RESISTANCE,
+    STRENGTH
+}