added icons :^)

[Occult-Dev]

I love this tool, but the way my drawing tablet is setup, I can't comfortable hit the hotkeys required to change drawing modes & stuff like that.

I decided to add two somewhat-subtle icon menubars at the top & bottom of the page which gives access to the various functions.

BTW, the icons were completely created from scratch by me in Figma, and I'm licensing under the most open & easy to use license possible: Public Domain CC0 1.0, so you're completely free to use them however you'd like, if you end up choosing to merge this :^)

[neauoire]

I won't merge this in the master since I rather keep noodle lean, but if someone asks, I will direct them to your fork as it might be useful for some people :)

[Occult-Dev]

That makes sense. Minimalism does suit noodle well :^)

Thanks!