fix: add vscode's smaller mipmaps to icons

[EpicGaming11195]

ported vscode's icons' small mipmaps for medium size and smaller to vscodium's stable icons, so they won't look blurry when they're small

old:

new:

(i don't use github often, so i don't exactly know if fix is the right prefix for this commit)

[daiyam]

I agree but I would prefer that the icons are generated by the script: https://github.com/VSCodium/vscodium/blob/master/icons/build_icons.sh

But you will need to modify the line https://github.com/VSCodium/vscodium/blob/6a38a6e9db4afdb987f1bc688940965735432653/icons/build_icons.sh#L139

Then run:

• ./build/build.sh -o to get VSCode source
• ./icons/build_icons.sh

[EpicGaming11195]

i use windows and barely know anything about linux or .sh files, so i wouldn't even know where to start with editing this script, but thanks for letting me know what exactly i will have to learn if/when i decide to do it