Customize branding

[makew0rld]

Completes some of the tasks in AgregoreWeb/agregore-mobile#5

New icons were created by taking the svg file, and then using Inkscape to render a PNG of the same size as the icon it would be replacing. For example:

inkscape -w 192 -h 192 path/to/icon.svg -o path/to/app_icon.png

Text replacements:

• Kiwi Browser -> Agregore
• Kiwi -> Agregore

[makew0rld]

Latest commit caused linting errors but I can't figure out why just yet.

[ERROR]   ERRORS FOUND in CLANG_FORMAT:[1]

[makew0rld]

Successfully rebased from the new kiwi branch and updated the PR. Mostly things look good. Not sure why these files were updated/appeared though:

I did not touch these myself.