[refactor,#59][s]: move packages/portal => examples/catalog as per plan in #59.

What is currently packages/portal is example of a running portal and should move to examples (it will get replaced by an actual portal lib soon).

examples/catalog/components/resource/About.tsx

@@ -0,0 +1,69 @@
+/* eslint-disable react/display-name */
+import { useQuery } from '@apollo/react-hooks';
+import { Table, ErrorMessage } from '../_shared';
+import { GET_RESOURCES_QUERY } from '../../graphql/queries';
+
+const columns = [
+  {
+    name: 'Name',
+    key: 'name',
+    render: ({ name, id }) => name || id,
+  },
+  {
+    name: 'Title',
+    key: 'title',
+  },
+  {
+    name: 'Description',
+    key: 'description',
+  },
+  {
+    name: 'Format',
+    key: 'format',
+  },
+  {
+    name: 'Size',
+    key: 'size',
+  },
+  {
+    name: 'Created',
+    key: 'created',
+  },
+  {
+    name: 'Updated',
+    key: 'last_modified',
+  },
+  {
+    name: 'Download',
+    key: 'download',
+    render: ({ url, format }) => (
+      <a
+        href={url}
+        className="bg-white hover:bg-gray-200 border text-black font-semibold py-2 px-4 rounded"
+      >
+        {format}
+      </a>
+    ),
+  },
+];
+
+const About: React.FC<{ variables: any }> = ({ variables }) => {
+  const { loading, error, data } = useQuery(GET_RESOURCES_QUERY, {
+    variables,
+    // Setting this value to true will make the component rerender when
+    // the "networkStatus" changes, so we are able to know if it is fetching
+    // more data
+    notifyOnNetworkStatusChange: true,
+  });
+
+  if (error) return <ErrorMessage message="Error loading dataset." />;
+  if (loading) return <div>Loading</div>;
+
+  const { result } = data.dataset;
+  const resource = result.resources.find(
+    (item) => item.name === variables.resource
+  );
+  return <Table columns={columns} data={[resource]} />;
+};
+
+export default About;

examples/catalog/components/resource/DataExplorer.tsx

@@ -0,0 +1,25 @@
+import { useQuery } from '@apollo/react-hooks';
+import { ErrorMessage } from '../_shared';
+import { GET_RESOURCES_QUERY } from '../../graphql/queries';
+
+const DataExplorer: React.FC<{ variables: any }> = ({ variables }) => {
+  const { loading, error, data } = useQuery(GET_RESOURCES_QUERY, {
+    variables,
+    // Setting this value to true will make the component rerender when
+    // the "networkStatus" changes, so we are able to know if it is fetching
+    // more data
+    notifyOnNetworkStatusChange: true,
+  });
+
+  if (error) return <ErrorMessage message="Error loading dataset." />;
+  if (loading) return <div>Loading</div>;
+
+  const { result } = data.dataset;
+  const resource = result.resources.find(
+    (item) => item.name === variables.resource
+  );
+
+  return <>{JSON.stringify(resource)}</>;
+};
+
+export default DataExplorer;