[#1223] lens/tui: Add metabase schema

Signed-off-by: Aleksey Savchuk <a.savchuk@yadro.com>

cmd/frostfs-lens/internal/schema/metabase/buckets/prefix.go

@@ -0,0 +1,53 @@
+package buckets
+
+type Prefix byte
+
+const (
+	Graveyard Prefix = iota
+	Garbage
+	ToMoveIt
+	ContainerVolume
+	Locked
+	ShardInfo
+	Primary
+	Lockers
+	_
+	Tombstone
+	Small
+	Root
+	Owner
+	UserAttribute
+	PayloadHash
+	Parent
+	Split
+	ContainerCounters
+	ECInfo
+)
+
+var x = map[Prefix]string{
+	Graveyard:         "Graveyard",
+	Garbage:           "Garbage",
+	ToMoveIt:          "To Move It",
+	ContainerVolume:   "Container Volume",
+	Locked:            "Locked",
+	ShardInfo:         "Shard Info",
+	Primary:           "Primary",
+	Lockers:           "Lockers",
+	Tombstone:         "Tombstone",
+	Small:             "Small",
+	Root:              "Root",
+	Owner:             "Owner",
+	UserAttribute:     "User Attribute",
+	PayloadHash:       "Payload Hash",
+	Parent:            "Parent",
+	Split:             "Split",
+	ContainerCounters: "Container Counters",
+	ECInfo:            "EC Info",
+}
+
+func (p Prefix) String() string {
+	if s, ok := x[p]; ok {
+		return s
+	}
+	return "Unknown Prefix"
+}