wait for macOS postgres to start in github action

postgres-macos-wait.yml

      - name: start postgres
        run: |
          brew services start postgresql
          echo "Check PostgreSQL service is running"
          i=20
          COMMAND='pg_isready'
          while [ $i -gt 0 ]; do
              echo "Check PostgreSQL service status"
              eval $COMMAND && break
              ((i--))
              if [ $i == 0 ]; then
                  echo "PostgreSQL service not ready, all attempts exhausted"
                  exit 1
              fi
              echo "PostgreSQL service not ready, wait 3 more sec, attempts left: $i"
              sleep 3
          done