feat: add templated git-cliff config generation to workflow

scripts/generate-git-cliff-config.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+CLIFF_CONFIG="cliff.toml"
+
+# Check if cliff.toml exists, if not, copy cliff.toml.template from the Action
+if [ ! -f "$CLIFF_CONFIG" ]; then
+  echo "cliff.toml not found, using template from action."
+  cp "${GITHUB_ACTION_PATH:-${github_action_path:-${{ github.action_path }}}}/cliff.toml.template" "$CLIFF_CONFIG"
+  # Replace placeholders in the copied config
+  OWNER="${GITHUB_REPOSITORY%/*}"
+  REPO="${GITHUB_REPOSITORY#*/}"
+  sed -i "s/owner = \"%OWNER%\"/owner = \"$OWNER\"/g" "$CLIFF_CONFIG"
+  sed -i "s/repo = \"%REPO%\"/repo = \"$REPO\"/g" "$CLIFF_CONFIG"
+fi