Add empty opportunity page (#83)

* Add empty opportunity page

* Fix coverage

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

front/src/pages/opportunities/__stories__/Opportunities.stories.tsx

@@ -0,0 +1,19 @@
+import { MemoryRouter } from 'react-router-dom';
+import Opportunities from '../Opportunities';
+import { ThemeProvider } from '@emotion/react';
+import { lightTheme } from '../../../layout/styles/themes';
+
+const component = {
+  title: 'Opportunities',
+  component: Opportunities,
+};
+
+export default component;
+
+export const OpportunitiesDefault = () => (
+  <ThemeProvider theme={lightTheme}>
+    <MemoryRouter>
+      <Opportunities />
+    </MemoryRouter>
+  </ThemeProvider>
+);