peapod: deprecate Peapod

Also suppress linter in `neofs-lens`.

Refs #2924.

Signed-off-by: Andrey Butusov <andrey@nspcc.io>

cmd/neofs-lens/internal/peapod/root.go

@@ -27,7 +27,11 @@ func init() {
 }
 
 // open and returns read-only peapod.Peapod located in vPath.
-func openPeapod() (*peapod.Peapod, error) {
+func openPeapod() (
+	// nolint:staticcheck
+	*peapod.Peapod,
+	error,
+) {
 	// interval prm doesn't matter for read-only usage, but must be positive
 	ppd := peapod.New(vPath, 0400, 1)
 	var compressCfg compression.Config

cmd/neofs-lens/internal/storage/sanity.go

@@ -41,7 +41,8 @@ func init() {
 type storageShard struct {
 	m   *meta.DB
 	fsT *fstree.FSTree
-	p   *peapod.Peapod
+	// nolint:staticcheck
+	p *peapod.Peapod
 }
 
 func sanityCheck(cmd *cobra.Command, _ []string) error {

pkg/local_object_storage/blobstor/peapod/peapod.go

@@ -39,6 +39,8 @@ type batch struct {
 // Peapod provides storage for relatively small NeoFS binary object (peas).
 // Peapod is a single low-level key/value database optimized to work with big
 // number of stored units.
+//
+// Deprecated: Use fstree.FSTree instead.
 type Peapod struct {
 	path string
 	perm fs.FileMode