Added helper script to run multiple tox environments

scripts/runtox.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+#
+# Usage: 
+#   ./scripts/runtox.sh py312 <pytest-args>
+#
+# Runs all environments with substring "py312" and the given arguments for pytest
+# 
+
+# Print commands and exit on first error
+set -ex
+
+# Find the right tox executable
+if [ -n "$TOXPATH" ]; then
+    true
+elif which tox &> /dev/null; then
+    TOXPATH=tox
+else
+    TOXPATH=./.venv/bin/tox
+fi
+
+# Find the environments matching the searchstring
+searchstring="$1"
+ENV="$($TOXPATH -l | grep -- "$searchstring" | tr $'\n' ',')"
+
+if [ -z "${ENV}" ]; then
+    echo "No targets found. Skipping."
+    exit 0
+fi
+
+# Run tox with all matching environments
+exec $TOXPATH -e "$ENV" -- "${@:2}"