Sprites? No, I prefer 7-Up

Added updated sprites for:

- Front: Sirfetch'd, Galarian Rapidash, Porygon, Carapthor

- Back: Blissey, Carapthor, Espeon, Glaceon, Hitmontop, Kleavor, Lickilicky, Magnezone, Melmetal, Galarian Moltres, Mr. Rime, Perrserker, Pupal, Rhyperior, Sandy Shocks, Scream Tail, Galarian Slowbro, Paldean Tauros Combat Breed, Toedscool, and Umbreon

(also some minor text fixes, notably adding Dr. Lava to the credits)

Thanks Albatross for being a total legend :3

data/pokemon/dex_text.asm

@@ -890,13 +890,13 @@ _ZubatDexEntry:: ; new entry
 	dex
 
 _EkansDexEntry:: ; new entry
-	text "It flicks its"
+	text "EKANS flicks its"
 	next "tongue to check"
-	next "for danger. If"
+	next "for danger. If it"
 
-	page "it eats RATTATA,"
-	next "it can go without"
-	next "food for a month"
+	page "eats a RATTATA, it"
+	next "won't need to eat"
+	next "again for a month"
 	dex
 
 _ParasDexEntry:: ; new entry