refactor: obj name mapping and internal path processing (#2733)

* refactor:Prepare to remove the get interface

* feat:add obj Unwarp interface

* refactor:obj name mapping and program internal path processing

* chore: fix typo

* feat: unwrap get

* fix: no use op.Get to get parent id

* fix: set the path uniformly

Co-authored-by: Noah Hsu <i@nn.ci>

drivers/uss/driver.go

@@ -71,11 +71,6 @@ func (d *USS) List(ctx context.Context, dir model.Obj, args model.ListArgs) ([]m
 	return res, err
 }
 
-//func (d *USS) Get(ctx context.Context, path string) (model.Obj, error) {
-//	// this is optional
-//	return nil, errs.NotImplement
-//}
-
 func (d *USS) Link(ctx context.Context, file model.Obj, args model.LinkArgs) (*model.Link, error) {
 	key := getKey(file.GetPath(), false)
 	host := d.CustomHost