feat: Add breadcrumbs for textbooks screen

cms/templates/textbooks.html

@@ -5,6 +5,8 @@
 <%!
 from django.utils.translation import ugettext as _
 from openedx.core.djangolib.js_utils import dump_js_escaped_json, js_escaped_string
+from openedx.core.djangoapps.discussions.config.waffle import ENABLE_PAGES_AND_RESOURCES_MICROFRONTEND
+from cms.djangoapps.contentstore.utils import get_pages_and_resources_url
 %>
 
 <%block name="title">${_("Textbooks")}</%block>
@@ -36,11 +38,39 @@ CMS.URL.LMS_BASE = "${settings.LMS_BASE | n, js_escaped_string}"
 
 <%block name="content">
   <div class="wrapper-mast wrapper">
+    % if context_course:
+      <%
+        pages_and_resources_mfe_enabled = ENABLE_PAGES_AND_RESOURCES_MICROFRONTEND.is_enabled(context_course.id)
+        course_key = context_course.id
+      %>
+    % endif
+
+    % if pages_and_resources_mfe_enabled:
+    <header class="mast has-actions">
+      <div class="jump-nav">
+        <nav class="nav-dd title ui-left">
+          <ol>
+              <li class="nav-item">
+                  <span class="label">${_("Content")}</span>
+                  <span class="spacer"> &rsaquo;</span>
+              </li>
+              <li class="nav-item">
+                <a class="title" href="${get_pages_and_resources_url(course_key)}" rel="external">${_("Pages & Resources")}</a>
+                <span class="spacer"> &rsaquo;</span>
+              </li>
+          </ol>
+        </nav>
+      </div>
+      <h1 class="page-header">
+        <span class="sr">&gt; </span>${_("Textbooks")}
+      </h1>
+    % else:
     <header class="mast has-actions has-subtitle">
       <h1 class="page-header">
         <small class="subtitle">${_("Content")}</small>
         <span class="sr">&gt; </span>${_("Textbooks")}
       </h1>
+    % endif
 
       <nav class="nav-actions" aria-label="${_('Page Actions')}">
         <h3 class="sr">${_("Page Actions")}</h3>