Links Awakening: Implement New Game (#1334)

Adds Link's Awakening: DX. Fully imports and forks LADXR, with permission - https://github.com/daid/LADXR

worlds/ladx/LADXR/locations/goldLeaf.py

@@ -0,0 +1,12 @@
+from .droppedKey import DroppedKey
+
+
+class GoldLeaf(DroppedKey):
+    pass  # Golden leaves are patched to work exactly like dropped keys
+
+
+class SlimeKey(DroppedKey):
+    # The slime key is secretly a golden leaf and just normally uses logic depended on the room number.
+    # As we patched it to act like a dropped key, we can just be a dropped key in the right room
+    def __init__(self):
+        super().__init__(0x0C6)