AuthZ: Extend /api/search to work with self-contained permissions (#70749)

* Search sql filter draft, unfinished

* Search works for empty roles

* Add current AuthModule to SignedInUser

* clean up, changes to the search

* Use constant prefixes

* Change AuthModule to AuthenticatedBy

* Add tests for using the permissions from the SignedInUser

* Refactor and simplify code

* Fix sql generation for pg and mysql

* Fixes, clean up

* Add test for empty permission list

* Fix

* Fix any vs all in case of edit permission

* Update pkg/services/authn/authn.go

Co-authored-by: Gabriel MABILLE <gamab@users.noreply.github.com>

* Update pkg/services/sqlstore/permissions/dashboard_test.go

Co-authored-by: Gabriel MABILLE <gamab@users.noreply.github.com>

* Fixes, changes based on the review

---------

Co-authored-by: Gabriel MABILLE <gamab@users.noreply.github.com>

pkg/services/user/model.go

@@ -206,6 +206,7 @@ type SignedInUser struct {
 	Login            string
 	Name             string
 	Email            string
+	AuthenticatedBy  string
 	ApiKeyID         int64 `xorm:"api_key_id"`
 	IsServiceAccount bool  `xorm:"is_service_account"`
 	OrgCount         int