Regionalize King's Grave

This is necessary to account for exiting here without otherwise having access to the area behind the rocks. Will mostly come up in insanity but has some extreme niches where it could matter in full.

EntranceShuffle.py

@@ -1591,6 +1591,9 @@ mandatory_connections = [('Links House', 'Links House'),  # unshuffled. For now
                          ('Lake Hylia Central Island Pier', 'Lake Hylia Central Island'),
                          ('Lake Hylia Central Island Teleporter', 'Dark Lake Hylia Central Island'),
                          ('Zoras River', 'Zoras River'),
+                         ('Kings Grave Outer Rocks', 'Kings Grave Area'),
+                         ('Kings Grave Inner Rocks', 'Light World'),
+                         ('Kings Grave Mirror Spot', 'Kings Grave Area'),
                          ('Kakariko Well (top to bottom)', 'Kakariko Well (bottom)'),
                          ('Master Sword Meadow', 'Master Sword Meadow'),
                          ('Hobo Bridge', 'Hobo Bridge'),