feat: add governed assisted form intake

tests/test_manifest.py

@@ -4,6 +4,7 @@ import unittest
 
 from govoplan_forms_runtime.backend.manifest import (
     ADMIN_SCOPE,
+    ASSIST_SCOPE,
     PARTICIPATE_SCOPE,
     READ_SCOPE,
     WRITE_SCOPE,
@@ -19,7 +20,7 @@ class ManifestTests(unittest.TestCase):
         self.assertEqual(manifest.dependencies, ("access", "forms"))
         self.assertEqual(
             {permission.scope for permission in manifest.permissions},
-            {PARTICIPATE_SCOPE, READ_SCOPE, WRITE_SCOPE, ADMIN_SCOPE},
+            {PARTICIPATE_SCOPE, ASSIST_SCOPE, READ_SCOPE, WRITE_SCOPE, ADMIN_SCOPE},
         )
         participant = next(
             item