Implement basic API interaction

web/app/ui/theme-toggle.tsx

@@ -0,0 +1,30 @@
+import {
+  ActionIcon,
+  Tooltip,
+  useComputedColorScheme,
+  useMantineColorScheme,
+} from "@mantine/core";
+import { IconMoonStars, IconSun } from "@tabler/icons-react";
+
+const ThemeToggle = () => {
+  const { colorScheme, setColorScheme } = useMantineColorScheme();
+  const comoputedColorScheme = useComputedColorScheme("dark");
+  const toggleColorScheme = () => {
+    setColorScheme(comoputedColorScheme === "dark" ? "light" : "dark");
+  };
+  return (
+    <Tooltip label={(colorScheme === "dark" ? "Light" : "Dark") + " Theme"}>
+      <ActionIcon
+        variant="default"
+        radius="xl"
+        size="lg"
+        aria-label="Toggle Dark Theme"
+        onClick={toggleColorScheme}
+      >
+        {colorScheme === "dark" ? <IconSun /> : <IconMoonStars />}
+      </ActionIcon>
+    </Tooltip>
+  );
+};
+
+export default ThemeToggle;