qBraid copyright footer

[ryanhill1]

Add actions that verifies that each notebook has the following copyright footer in the raw .ipynb file data:

  {
   "cell_type": "markdown",
   "id": "7edaff03-26c3-4370-9f91-8b028b625732",
   "metadata": {},
   "source": [
    "<div class=\"alert alert-block alert-info\">\n",
    "<b>Copyright Notice:</b> \n",
    "    All rights reserved © [2024] qBraid. This notebook is part of the qBraid-SDK.\n",
    "The qBraid-SDK is free software released under the GNU General Public License v3\n",
    "or later. You can redistribute and/or modify it under the terms of the GPL v3.\n",
    "See the LICENSE file in the project root or <https://www.gnu.org/licenses/gpl-3.0.html>. THERE IS NO WARRANTY for the qBraid-SDK, as per Section 15 of the GPL v3.\n",
    "</div>"
   ]
  },