refac: remove frontend & clearer DDD

api/pkg/apperr/messages.go

@@ -0,0 +1,5 @@
+package apperr
+
+const LogsErrorMessage = "Access to the requested resource is forbidden due to incorrect password and/or username."
+const BodyErrorMessage = "The request cannot be processed due to a mismatch in the format of the body."
+const IdUint32ErrorMessage = "The server expects the ID to be in the format of an unsigned 32-bit integer (uint32)."