Document mirage_tower.c. (Combine fldeff_groundshake.c and fossil_specials.c)

include/mirage_tower.h

@@ -0,0 +1,8 @@
+#ifndef GUARD_MIRAGE_TOWER_H
+#define GUARD_MIRAGE_TOWER_H
+
+void ClearMirageTowerPulseBlendEffect(void);
+void ClearMirageTowerPulseBlend(void);
+void TryStartMirageTowerPulseBlendEffect(void);
+
+#endif // GUARD_MIRAGE_TOWER_H