Publish to Microsoft Edge Add-ons store

[uncenter]

• https://learn.microsoft.com/en-us/microsoft-edge/extensions-chromium/publish/publish-extension#submit-your-extension-to-the-microsoft-edge-add-ons-website

Related to #8. We will need to set up a Catppuccin account for the Microsoft Edge Add-ons store, add the credentials as secrets, and add them as environment variables to the release workflow's submit step:

          EDGE_PRODUCT_ID: ${{ secrets.EDGE_PRODUCT_ID }}
          EDGE_CLIENT_ID: ${{ secrets.EDGE_CLIENT_ID }}
          EDGE_CLIENT_SECRET: ${{ secrets.EDGE_CLIENT_SECRET }}
          EDGE_ACCESS_TOKEN_URL: ${{ secrets.EDGE_ACCESS_TOKEN_URL }}