reorganize kiss into its own directory

kiss/build-scripts/py/test-py.sh

@@ -0,0 +1,8 @@
+#! /bin/bash
+
+# "python" is supposed to mean Python3 everywhere now, but not in practice
+if [ ! -z "$(which python3)" ]; then
+    python3 bin/py/test.py
+else
+    python bin/py/test.py
+fi