Revamp Pokemon Mansion B2F

This was hell to do. There is still one bug in there, and that's the item pickups don't work for some reason. I don't know how these work honestly so if anyone wants to sort that go ahead.

Anyway, some stuff on the map;
- Currently, a warp from B1F leads there, which is intentionally non-returnable. The player walks through the whole map to get to the warp panel. A walk of humanity's shame, if you will. A warp for where the player is meant to go will be necessary later.
- Lore from Japanese media, particularly the first movie's interpretation of Mewtwo, is included. This is based on context clues on its canonicity from LGPE and other bits.
- A clue on how to get the Old Sea Chart is not-so-subtly included.

The MissingNo. event is unfinished, I intend for Martha to deal with that. The text intentionally lacks a "done" bit to force an unpredictable error; I believe this is inconsequential gameplay-wise and should make for a good opening quote when fighting it.

Oh, and Faraway Island has Mankey, Butterfree, and Primeape as find-able Pokemon now. This should be expanded upon later.

scripts/PokemonMansion3F.asm

@@ -53,7 +53,7 @@ Mansion3Script0:
 CoordsData_52254:
 	dbmapcoord 16, 14
 	dbmapcoord 17, 14
-	dbmapcoord 19, 14
+	dbmapcoord 19, 14 ; this one kicks you out i think
 	db -1 ; end
 
 Mansion3Script_5225b:

scripts/PokemonMansionB2F.asm

@@ -2,5 +2,63 @@ PokemonMansionB2F_Script:
 	jp EnableAutoTextBoxDrawing
 
 PokemonMansionB2F_TextPointers:
+	dw B2FBook1
+	dw B2FBook2
+	dw PickUpItemText
+	dw PickUpItemText
+	dw BoulderText
+	dw BoulderText
+	dw BoulderText
+	dw BoulderText
+	dw BoulderText
+	dw BoulderText
+	dw BoulderText
+	dw BoulderText
+	dw BoulderText
+	dw B2FPicture
+	dw B2FTrioPods
+	dw B2FTrioPods
+	dw B2FTrioPods
+	dw B2FAmberPod
+	dw B2FMewtwoPod
+	dw B2FComputer1
+	dw B2FComputer2
+	dw B2FMissingNo
+
+B2FBook1:
+	text_far _B2FBook1
+	text_end
+
+B2FBook2:
+	text_far _B2FBook2
+	text_end
+
+B2FPicture:
+	text_far _B2FPicture
+	text_end
+
+B2FComputer1:
+	text_far _B2FComputer1
+	text_end
+
+B2FComputer2:
+	text_far _B2FComputer2
+	text_end
+	
+B2FMissingNo:
+	text_far _B2FMissingNo
+	text_end ; i'll figure this out another time
+
+B2FTrioPods:
+	text_far _TrioPods
+	text_end
+
+B2FAmberPod:
+	text_far _AmberPod
+	text_end
+
+B2FMewtwoPod:
+	text_far _MewtwoPod
+	text_end
 
 	text_end ; unused