[Nested Folder] Delete folder methode (#58444)

* transfer DeleteFolder changes from larger PR

* finish some thingies

* add the simplest delete logics

* some intermedia steps

* fix tests

* add test

* fix some comments

Co-authored-by: yangkb09 <yangkb09@gmail.com>

pkg/services/folder/model.go

@@ -78,8 +78,9 @@ type MoveFolderCommand struct {
 // DeleteFolderCommand captures the information required by the folder service
 // to delete a folder.
 type DeleteFolderCommand struct {
-	UID   string `json:"uid" xorm:"uid"`
-	OrgID int64  `json:"orgId" xorm:"org_id"`
+	UID              string `json:"uid" xorm:"uid"`
+	OrgID            int64  `json:"orgId" xorm:"org_id"`
+	ForceDeleteRules bool   `json:"forceDeleteRules"`
 }
 
 // GetFolderQuery is used for all folder Get requests. Only one of UID, ID, or