Implement Android application icons

Tor Browser application icons have gotten a refresh from the UX & Design team! Can we push these new assets to TB for android as well please? @dan would you mind taking a look at what I'm sharing in this folder for stable and whether this is sufficient or overkill for what assets you need? These are exports directly from an official Google Material 3 template on figma, but last time we tried to do this for another project, we came across some issues on the implementation side. If these look good, I'll go ahead and export for alpha and nightly too :)

android app icons (all releases): Nextcloud