Populate Citrine City

This commit adds NPCs and signs to Citrine, doing some significant worldbuilding in the process. I considered adding an event where Oak greets you like how the Magma/Aqua Admins do on the ORAS Battle Resort, but it seemed a little too on-the-nose, y'know?

There was an issue where you wouldn't be walked out of doors automatically, which was quite immersion-breaking. That was because the door tile IDs weren't defined - this is fixed too.

Some map elements have been altered to facilitate the new changes, and obviously, some map sprite slots have been filled.

Importing and changing the Battle Tent is most likely my next task.

scripts/CitrineCity.asm

@@ -2,5 +2,59 @@ CitrineCity_Script:
 	jp EnableAutoTextBoxDrawing
 
 CitrineCity_TextPointers:
+	dw CitrineCityText1
+	dw CitrineCityText2
+	dw CitrineCityText3
+	dw CitrineCityText4
+	dw CitrineShopSignText
+	dw PokeCenterSignText
+	dw CitrineCityBillboard1
+	dw CitrineCityBillboard2
+	dw CitrineCityTower
+	dw CitrineCitySignText
+	dw CitrineCityDirections
+	dw CitrineCityCavern
 
-	text_end ; unused
+CitrineCityText1:
+	text_far _CitrineCityText1
+	text_end
+
+CitrineCityText2:
+	text_far _CitrineCityText2
+	text_end
+
+CitrineCityText3:
+	text_far _CitrineCityText3
+	text_end
+
+CitrineCityText4:
+	text_far _CitrineCityText4
+	text_end
+
+CitrineShopSignText:
+	text_far _CitrineShopSignText
+	text_end
+
+CitrineCityBillboard1:
+	text_far _CitrineCityBillboard1
+	text_end
+
+CitrineCityBillboard2:
+	text_far _CitrineCityBillboard2
+	text_end
+
+CitrineCityTower:
+	text_far _CitrineCityTower
+	text_end
+
+CitrineCitySignText:
+	text_far _CitrineCitySignText
+	text_end
+
+CitrineCityDirections:
+	text_far _CitrineCityDirections
+	text_end
+
+CitrineCityCavern:
+	text_far _CitrineCityCavern
+	text_end

scripts/CitrineRocketHouse.asm

@@ -51,9 +51,9 @@ JamesText:
 	ld a, [wCurrentMenuItem]
 	and a
 	jr nz, .refused
-	; Proceed from here as if Yes is stated. 
+	; Proceed from here as Yes is stated. 
 	
-	; Here, the menu should pop up and the player picks a Pokemon to juice.
+	; Here, the party menu pops up and the player picks a Pokemon to juice.
 	xor a
 	ld [wUpdateSpritesEnabled], a
 	ld [wPartyMenuTypeOrMessageID], a