implemented startswith call with tuple on byte arrays

Author: Kolpa

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/bytes/ByteArrayBuiltins.java

@@ -477,6 +477,18 @@ public Object iter(PByteArray byteArray) {
     abstract static class StartsWithNode extends PythonBuiltinNode {
         @Child private SequenceStorageNodes.LenNode lenNode;
 
+        @Specialization
+        boolean startswith(PByteArray self, PTuple prefixes, @SuppressWarnings("unused") PNone start, @SuppressWarnings("unused") PNone end,
+                           @Cached("create()") BytesNodes.FindNode findNode) {
+            for (Object arrayObj : prefixes.getArray()) {
+                PIBytesLike array = (PIBytesLike) arrayObj;
+                if (startswith(self, array, start, end, findNode)) {
+                    return true;
+                }
+            }
+            return false;
+        }
+
         @Specialization
         boolean startswith(PByteArray self, PIBytesLike prefix, @SuppressWarnings("unused") PNone start, @SuppressWarnings("unused") PNone end,
                         @Cached("create()") BytesNodes.FindNode findNode) {