Free roaming from Cerulean, add Faraway Island sign

- Replaces tiles east and west of Cerulean so you can roam back to Mt. Moon and over to Rock Tunnel with no issue.
- Adds the Faraway Island sign, with a - "JI" bit to represent Mr. Fuji. This was in the Japanese release, but never got translated internationally. "I depart" may need fine-tuning, as it implies he died; this was a mistranslation, obviously.
- Added a text bank for the Mew encounter to make Martha's job easier later.

text/FarawayIslandInside.asm

@@ -0,0 +1,4 @@
+_FarawayIslandMew::
+	text "Mew!"
+	
+	done

text/FarawayIslandOutside.asm

@@ -0,0 +1,19 @@
+_FarawayIslandSign::
+	text "The writing is"
+	line "fading as if it"
+	cont "was written a"
+	cont "long time ago..."
+	
+	text "...ber, 6th day"
+	
+	text "If any human..."
+	line "sets foot here..."
+	cont "again...et it be"
+	cont "a kindhearted"
+	cont "pers..."
+	
+	text "...ith that hope,"
+	line "I depar..."
+	cont "...JI"
+	
+	done