Change permission to support firefox

[snippins]

Just want to note that to make this works on firefox (install by self-signing or using the developer version) you could change the permission in the manifest as follows:

"permissions": ["https://*.twitch.tv/*", "https://*.ttvnw.net/*", "https://dqrpb9wgowsf5.cloudfront.net/*", "https://d1m7jfoe9zdc1j.cloudfront.net/*"],

[Azzurite]

Now also/instead needs https://d1ymi26ma8va5x.cloudfront.net/*