♻️ Refactor (minor) of http session code

The rationale behind the refactor:
- Make available profile data to other middlewares without
  the need to access to the database (mainly for error reporting).
- Align with codestyle with the rest of internal modules.
- Simplify code.

backend/src/app/rpc.clj

@@ -11,12 +11,14 @@
    [app.common.spec :as us]
    [app.db :as db]
    [app.http :as-alias http]
+   [app.http.session :as-alias session]
    [app.loggers.audit :as audit]
    [app.metrics :as mtx]
    [app.msgbus :as-alias mbus]
    [app.rpc.retry :as retry]
    [app.rpc.rlimit :as rlimit]
    [app.rpc.semaphore :as-alias rsem]
+   [app.storage :as-alias sto]
    [app.util.services :as sv]
    [app.util.time :as ts]
    [clojure.spec.alpha :as s]
@@ -236,13 +238,11 @@
 (s/def ::ldap (s/nilable map?))
 (s/def ::msgbus ::mbus/msgbus)
 (s/def ::public-uri ::us/not-empty-string)
-(s/def ::session map?)
-(s/def ::storage some?)
 (s/def ::sprops map?)
 
 (defmethod ig/pre-init-spec ::methods [_]
-  (s/keys :req-un [::storage
-                   ::session
+  (s/keys :req-un [::sto/storage
+                   ::session/session
                    ::sprops
                    ::audit
                    ::public-uri