[MKM] Implement Cases (#11713)

* Implementing "case" mechanic

* [MKM] Implement Case of the Burning Masks

* [MKM] Implement Case of the Filched Falcon

* [MKM] Implement Case of the Crimson Pulse

* [MKM] Implement Case of the Locked Hothouse

* Address PR comments

* some minor adjustments

* adjustments to hints

---------

Co-authored-by: Matthew Wilson <matthew_w@vaadin.com>
Co-authored-by: xenohedron <xenohedron@users.noreply.github.com>

Mage/src/main/java/mage/game/events/GameEvent.java

@@ -567,6 +567,12 @@ public class GameEvent implements Serializable {
          playerId   the player crafting
          */
         EXILED_WHILE_CRAFTING,
+        /* Solving a Case
+         targetId   the permanent being solved
+         sourceId   of the ability solving
+         playerId   the player solving
+         */
+        SOLVE_CASE, CASE_SOLVED,
         /* Become suspected
          targetId   the permanent being suspected
          sourceId   of the ability suspecting