Service Accounts: Enable adding folder, dashboard and data source permissions to service accounts (#76133)

* Add SAs to Datasource permissions

Co-authored-by: ievaVasiljeva <ieva.vasiljeva@grafana.com>

* add SAs to dashboards/folders managed permissions

* Update public/app/core/components/AccessControl/Permissions.tsx

Co-authored-by: Ieva <ieva.vasiljeva@grafana.com>

* regenerate i18n

* add doc

---------

Co-authored-by: ievaVasiljeva <ieva.vasiljeva@grafana.com>

public/locales/fr-FR/grafana.json

@@ -3,6 +3,7 @@
   "access-control": {
     "add-permission": {
       "role-label": "",
+      "serviceaccount-label": "",
       "team-label": "",
       "title": "",
       "user-label": ""
@@ -18,6 +19,7 @@
       "no-permissions": "",
       "permissions-change-warning": "",
       "role": "",
+      "serviceaccount": "",
       "team": "",
       "title": "",
       "user": ""