Implement about page

tests/components/cards/Stat.test.tsx

@@ -0,0 +1,19 @@
+import { render, screen } from "@testing-library/react";
+import { describe, it, expect } from "vitest";
+import Stat from "../../../app/components/cards/Stat";
+
+describe("Stat", () => {
+  it("renders value and label", () => {
+    render(
+      <Stat
+        value="420M+"
+        label="open source projects"
+        asOf="as of June 30, 2024"
+      />,
+    );
+
+    expect(screen.getByText("420M+")).toBeInTheDocument();
+    expect(screen.getByText("open source projects")).toBeInTheDocument();
+    expect(screen.getByText("as of June 30, 2024")).toBeInTheDocument();
+  });
+});