Add trusted header auth and publisher shell

repub/pages/__init__.py

@@ -1,4 +1,5 @@
 from repub.pages.dashboard import dashboard_page, dashboard_page_with_data
+from repub.pages.publisher import publisher_page
 from repub.pages.runs import execution_logs_page, runs_page
 from repub.pages.settings import settings_page
 from repub.pages.shim import shim_page
@@ -10,6 +11,7 @@ __all__ = [
     "dashboard_page_with_data",
     "edit_source_page",
     "execution_logs_page",
+    "publisher_page",
     "runs_page",
     "settings_page",
     "shim_page",