getComputedStyle(document.body) can now be accessed from this.style within a Page() instance.
Added basic content insertion to ChangeAvatar.mjs.
Page() body font-size for extension popup.
Separated client- and server-side features into seperate root folders. Since Stadia Avatar now has two versions (Userscript and Chrome extension).
Added core extension functionality.
Created a page constructor for extension popup. High probability that I will create a seperate repo for this feature, as it's pretty neat and very useful for future extensions.
