Basic discussions forum framework

Adds the basic structure for the Discussions MFE around which future development
will happen.

src/discussions/utils.js

@@ -0,0 +1,12 @@
+/* eslint-disable import/prefer-default-export */
+export function buildIntlSelectionList(options, intl, messages) {
+  return Object.values(options)
+    .map(
+      option => (
+        {
+          label: intl.formatMessage(messages[option]),
+          value: option,
+        }
+      ),
+    );
+}