Add subdirectories to data/ similar to pokecrystal

Top level text/ is now solely for the former text/maps/ files, and other files are in their respective subdirectories in data/.

text/CeladonMart5F.asm

@@ -0,0 +1,28 @@
+_CeladonMart5Text1::
+	text "#MON ability"
+	line "enhancers can be"
+	cont "bought only here."
+
+	para "Use CALCIUM to"
+	line "increase SPECIAL"
+	cont "abilities."
+
+	para "Use CARBOS to"
+	line "increase SPEED."
+	done
+
+_CeladonMart5Text2::
+	text "I'm here for"
+	line "#MON ability"
+	cont "enhancers."
+
+	para "PROTEIN increases"
+	line "ATTACK power."
+
+	para "IRON increases"
+	line "DEFENSE!"
+	done
+
+_CeladonMart5Text5::
+	text "5F: DRUG STORE"
+	done