A new mirror connection

This is a simple tweak adding a mirror connection between the main Light World and the Hyrule Castle Courtyard. This will very rarely come into play; it only matters in circumstances where the uncle tunnel does not instantly connect to the courtyard (some madness/insanity situations and when Ganon's tunnel is there in full and below), when the player does not have access to the upper levels of Hyrule Castle or to the pyramid, but the player does have the Mirror. This correctly acknowledges that entering the castle main gate is fully and permanently softlock proof in this situation.

EntranceShuffle.py

@@ -1162,6 +1162,7 @@ mandatory_connections = [('Links House', 'Links House'),  # unshuffled. For now
                          ('Desert Palace Entrance (North) Rocks', 'Desert Palace Entrance (North) Spot'),
                          ('Desert Ledge Return Rocks', 'Desert Ledge'),
                          ('Hyrule Castle Ledge Courtyard Drop', 'Hyrule Castle Courtyard'),
+                         ('Hyrule Castle Main Gate', 'Hyrule Castle Courtyard'),
                          ('Throne Room', 'Sewers (Dark)'),
                          ('Sewers Door', 'Sewers'),
                          ('Sanctuary Push Door', 'Sanctuary'),