add helper script to download xcframework

Setup.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+# -*- coding: utf8 -*-
+
+import os
+import re
+import shutil
+import tarfile
+import tempfile
+import urllib.request
+
+coresdk_url = "https://github.com/4Players/odin-sdk"
+script_path = os.path.dirname(__file__)
+
+def get_xcframework_version():
+  file = open(os.path.join(script_path, "Sources", "OdinKit.swift"), "r")
+  text = file.read()
+  file.close()
+
+  return re.findall("let version = \"([^\"]+)\"", text)[0]
+
+if __name__ == "__main__":
+  xcframework_version = get_xcframework_version()
+  print("Downloading Odin.xcframework version", xcframework_version)
+
+  xcframework_url = coresdk_url + "/releases/download/v" + xcframework_version + "/odin-xcframework.tgz"
+  with urllib.request.urlopen(xcframework_url) as response:
+    with tempfile.NamedTemporaryFile(delete = True) as tmp:
+      shutil.copyfileobj(response, tmp)
+      tar = tarfile.open(tmp.name)
+      tar.extractall(os.path.join(script_path, "Frameworks"))
+      tar.close()
+
+  print("All done :-)")