frontend: add scaffolding for favorites tab

frontend/src/components/TabView.tsx

@@ -0,0 +1,64 @@
+import React, { ReactNode } from 'react';
+import classNames from 'classnames';
+
+interface TabProps<T> {
+  label: string;
+  identifier: T;
+  icon?: ReactNode;
+  children: ReactNode;
+}
+
+export const Tab = <T,>({ children }: TabProps<T>) => {
+  // Wrapper component
+  return <>{children}</>;
+};
+
+interface TabViewProps<T> {
+  children: ReactNode;
+  selectedTab: T;
+  onTabChange: (tab: T) => void;
+}
+
+export const TabView = <T,>({ children, selectedTab, onTabChange }: TabViewProps<T>) => {
+  // Filter and validate children to only get Tab components
+  const tabs = React.Children.toArray(children).filter(
+    (child) => React.isValidElement(child) && child.type === Tab
+  ) as React.ReactElement<TabProps<T>>[];
+
+  return (
+    <div className="flex flex-col h-full">
+      <div className="flex flex-row h-11 border-b border-white/20">
+        {tabs.map((tab, index) => {
+          const isSelected = selectedTab === tab.props.identifier;
+          const rowClassName = classNames(
+            "flex flex-row items-center justify-center w-full gap-2 text-white",
+            { "qc-highlighted": isSelected }
+          );
+
+          return (
+            <div
+              key={index}
+              className={rowClassName}
+              onClick={() => onTabChange(tab.props.identifier)}
+            >
+              {tab.props.icon}
+              <div className="text-sm font-bold">{tab.props.label}</div>
+            </div>
+          );
+        })}
+      </div>
+      <div className="flex-1">
+        {tabs.map((tab, index) => (
+          <div
+            key={index}
+            className={classNames("w-full h-full", {
+              hidden: selectedTab !== tab.props.identifier,
+            })}
+          >
+            {tab.props.children}
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+};