Initial check in of Python training code

src/python/build_monotonic_align.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -eo pipefail
+
+this_dir="$( cd "$( dirname "$0" )" && pwd )"
+
+if [ -d "${this_dir}/.venv" ]; then
+    source "${this_dir}/.venv/bin/activate"
+fi
+
+cd "${this_dir}/larynx_train/vits/monotonic_align"
+mkdir -p monotonic_align
+cythonize -i core.pyx
+mv core*.so monotonic_align/