[feature request] Web search icons

[filcuk]

There's an existing idea on #955, but I think a simple web search for icons would be a lot easier to implement across platforms.

• Search by name
• Search returns images, prefers svg/png, optionally prefers known free sources like Wikipedia, optional colour search options (search engines often support this)
• Use selects icon in a preview: validate resolution, transparency, maybe even with simple editing like crop or zoom
• Icon is saved to a custom folder

The initial setup is still very time-consuming, but using a fully setup menu is amazing, thanks for this awesome project.

[filcuk]

I did not realise base64 also supported direct URLs, which makes this effort mostly unnecessary.