Matrix-GChat Bridge Login Cookie Generator

Little web extension to evaluate the Google Chat cookies and generate the `login-cookie` command, that mautrix' Google Chat bridge needs for authentication (see https://docs.mau.fi/bridges/python/googlechat/index.htm). ## Usage 1. Install the web extension for your browser 2. login to Google Chat 3. click the extension's icon and then click the copy button in the popup 4. paste the contents into the matrix conversation with the Google Chat bridge