[#265] pkg/reputation: Implement PeerID and Trust types

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/reputation/peer.go

@@ -0,0 +1,29 @@
+package reputation
+
+// PeerID represents peer ID compatible with NeoFS API v2.
+type PeerID []byte
+
+// NewPeerID creates and returns blank PeerID.
+func NewPeerID() *PeerID {
+	return PeerIDFromV2(nil)
+}
+
+// PeerIDFromV2 converts bytes slice to PeerID.
+func PeerIDFromV2(data []byte) *PeerID {
+	return (*PeerID)(&data)
+}
+
+// SetBytes sets bytes of peer ID.
+func (x *PeerID) SetBytes(v []byte) {
+	*x = v
+}
+
+// Bytes returns bytes of peer ID.
+func (x PeerID) Bytes() []byte {
+	return x
+}
+
+// ToV2 converts PeerID to byte slice.
+func (x PeerID) ToV2() []byte {
+	return x
+}