Function load_system_icon_by_name 

pub fn load_system_icon_by_name(name: &str, set: IconSet) -> Option<IconData>

Load a system icon by its platform-specific name string.

Dispatches to the appropriate platform loader based on the icon set:

• IconSet::Freedesktop – freedesktop icon theme lookup (system theme)
• IconSet::SfSymbols – macOS SF Symbols
• IconSet::SegoeIcons – Windows Segoe Fluent / stock icons
• IconSet::Material / IconSet::Lucide – bundled SVG lookup by name

Returns None if the icon is not found on the current platform or the icon set is not available.

Examples

use native_theme::{load_system_icon_by_name, IconSet};

let icon = load_system_icon_by_name("content_copy", IconSet::Material);
assert!(icon.is_some());