feat: Unified icon picker (#7038)

shared/utils/icon.ts

@@ -0,0 +1,13 @@
+import { IconType } from "../types";
+import { IconLibrary } from "./IconLibrary";
+
+const outlineIconNames = new Set(Object.keys(IconLibrary.mapping));
+
+export const determineIconType = (
+  icon?: string | null
+): IconType | undefined => {
+  if (!icon) {
+    return;
+  }
+  return outlineIconNames.has(icon) ? IconType.Outline : IconType.Emoji;
+};