♻️ 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/src/app/srepl/helpers.clj

@@ -70,7 +70,7 @@
   [system & {:keys [update-fn id save? migrate? inc-revn?]
              :or {save? false migrate? true inc-revn? true}}]
   (db/with-atomic [conn (:app.db/pool system)]
-    (let [file (-> (db/get-by-id conn :file id {:for-update true})
+    (let [file (-> (db/get-by-id conn :file id {::db/for-update? true})
                    (update :features db/decode-pgarray #{}))]
       (binding [*conn* conn
                 pmap/*tracked* (atom {})