LibraryPanels: removes feature toggle (#33839)

* WIP: intial structure

* Refactor: adds create library element endpoint

* Feature: adds delete library element

* wip

* Refactor: adds get api

* Refactor: adds get all api

* Refactor: adds patch api

* Refactor: changes to library_element_connection

* Refactor: add get connections api

* wip: in the middle of refactor

* wip

* Refactor: consolidating both api:s

* Refactor: points front end to library elements api

* Tests: Fixes broken test

* LibraryPanels: removes feature toggle

* Fix: fixes delete library elements in folder and adds tests

* Tests: fixes snapshot

* Refactor: adds service interfaces so they can be easily mocked

* Refactor: changes order of tabs in manage folder

* Refactor: fixes so link does not cover whole card

* Refactor: fixes index string name

* Update pkg/services/libraryelements/libraryelements.go

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

* Update pkg/services/libraryelements/libraryelements_permissions_test.go

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

* Update pkg/services/libraryelements/database.go

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

* Chore: changes after PR comments

* Update libraryelements.go

* Update libraryelements.go

* Chore: updates after PR comments

* Chore: trying to fix build error

* Refactor: fixed stupid mistake

* Update libraryelements.go

* Chore: tries to fix build errors

* Refactor: trying to fix MySQL key length

* Update libraryelements.go

* Update pkg/services/libraryelements/libraryelements.go

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

* Update pkg/services/librarypanels/librarypanels.go

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

* Refactor: changes after PR comments

* Refactor: changes after PR comments

* Tests: fixes tests

* Refactor: renames connections to connectedDashboards

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

pkg/services/libraryelements/libraryelements_patch_test.go

@@ -57,9 +57,9 @@ func TestPatchLibraryElement(t *testing.T) {
 					},
 					Version: 2,
 					Meta: LibraryElementDTOMeta{
-						Connections: 0,
-						Created:     sc.initialResult.Result.Meta.Created,
-						Updated:     result.Result.Meta.Updated,
+						ConnectedDashboards: 0,
+						Created:             sc.initialResult.Result.Meta.Created,
+						Updated:             result.Result.Meta.Updated,
 						CreatedBy: LibraryElementDTOMetaUser{
 							ID:        1,
 							Name:      userInDbName,