♻️ Refactor profile and session handling

- makes the profile access more efficient (replace in-app joins to a
  simple select query on profile table
- add partial support for access-tokens (still missing some RPC methods)
- move router definitions to specific modules and simplify the main http
  module definitions to simple includes
- simplifiy authentication code related to access-tokens and sessions
- normalize db parameters with proper namespaced props
- more work on convert all modules initialization to use proper specs
  with fully-qualified keyword config props

backend/test/backend_tests/rpc_file_test.clj

@@ -652,7 +652,9 @@
       ;; check that the unknown frame thumbnail is deleted
       (let [res (th/db-exec! ["select * from file_object_thumbnail"])]
         (t/is (= 1 (count res)))
-        (t/is (= "new-data" (get-in res [0 :data])))))))
+        (t/is (= "new-data" (get-in res [0 :data])))))
+
+    ))
 
 
 (t/deftest file-thumbnail-ops