Identify more labels, and use the jumptable macro when possible

engine/events/field_moves.asm

@@ -154,16 +154,7 @@ CutGrassGFX:
 INCBIN "gfx/overworld/cut_grass.2bpp"
 
 OWCutJumptable:
-	ld a, [wJumptableIndex]
-	ld e, a
-	ld d, 0
-	ld hl, .dw
-	add hl, de
-	add hl, de
-	ld a, [hli]
-	ld h, [hl]
-	ld l, a
-	jp hl
+	jumptable .dw, wJumptableIndex
 
 .dw
 	dw Cut_SpawnAnimateTree