Add script and metadata to build binary packages.

builder/start.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+d=$(pwd)
+if test x"$(basename $d)" = xbuilder; then
+  d=${d}/../
+fi
+if ! [ -e ${d}/setup.py ] ; then
+  echo "Unknown directory. Please move to the root of cosmotool source tree."
+  exit 1
+fi
+
+podman run -ti  --rm -e PLAT=manylinux2014_x86_64 -v ${d}:/io:Z quay.io/pypa/manylinux2014_x86_64 /io/builder/build-wheels.sh