add matrix publish/consume transport for orchestrator rail

bin/mosaic-orchestrator-matrix-publish

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+MOSAIC_HOME="${MOSAIC_HOME:-$HOME/.mosaic}"
+BRIDGE="$MOSAIC_HOME/rails/orchestrator-matrix/transport/matrix_transport.py"
+
+if [[ ! -f "$BRIDGE" ]]; then
+  echo "[mosaic-orch-matrix] missing transport bridge: $BRIDGE" >&2
+  exit 1
+fi
+
+exec python3 "$BRIDGE" --repo "$(pwd)" --mode publish "$@"