feat: more role backend and admin/writer roles additions and adjustments

internal/domain/role/roleKeys.go

@@ -0,0 +1,11 @@
+package role
+
+const (
+	KeyActivityView   = "activity.view"
+	KeyActivityExport = "activity.export"
+	KeyAPIKeysView    = "apikeys.view"
+	KeyAPIKeysRevoke  = "apikeys.revoke"
+	KeyAuthorsEdit    = "authors.edit"
+	KeyUsersView      = "users.view"
+	KeyApplyUpdates   = "system.apply_updates"
+)