feat(element/selection): Element implementation for selecting an enum variant

build.zig

@@ -13,6 +13,7 @@ pub fn build(b: *std.Build) void {
         progress,
         radio_button,
         scrollable,
+        selection,
         // layouts:
         vertical,
         horizontal,
@@ -65,6 +66,7 @@ pub fn build(b: *std.Build) void {
                 .progress => "examples/elements/progress.zig",
                 .radio_button => "examples/elements/radio-button.zig",
                 .scrollable => "examples/elements/scrollable.zig",
+                .selection => "examples/elements/selection.zig",
                 // layouts:
                 .vertical => "examples/layouts/vertical.zig",
                 .horizontal => "examples/layouts/horizontal.zig",