♻️ 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/worker.clj

@@ -45,7 +45,7 @@
 
 (defmethod ig/init-key ::executor
   [skey {:keys [::parallelism]}]
-  (let [prefix  (if (vector? skey) (-> skey first name keyword) :default)
+  (let [prefix  (if (vector? skey) (-> skey first name keyword) "default")
         tname   (str "penpot/" prefix "/%s")
         factory (px/forkjoin-thread-factory :name tname)]
     (px/forkjoin-executor