fix: Pets missing an item rarity

src/main/kotlin/util/StringUtil.kt

@@ -0,0 +1,9 @@
+package moe.nea.firmament.util
+
+object StringUtil {
+	fun String.words(): Sequence<String> {
+		return splitToSequence(" ") // TODO: better boundaries
+	}
+
+	fun Iterable<String>.unwords() = joinToString(" ")
+}