Update API usage

app/src/main/java/io/nekohasekai/sfa/ktx/Wrappers.kt

@@ -0,0 +1,11 @@
+package io.nekohasekai.sfa.ktx
+
+import io.nekohasekai.libbox.StringIterator
+
+fun StringIterator.toList(): List<String> {
+    return mutableListOf<String>().apply {
+        while (hasNext()) {
+            add(next())
+        }
+    }
+}