[#26] object: Replace object.Range message definition

This commit replaces Range message definition closer to where it is used. In
the future, only the types associated with the structure of the object will
be defined in types.proto file.

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

proto-docs/object.md

@@ -21,6 +21,7 @@
     - [PutRequest](#object.PutRequest)
     - [PutRequest.PutHeader](#object.PutRequest.PutHeader)
     - [PutResponse](#object.PutResponse)
+    - [Range](#object.Range)
     - [SearchRequest](#object.SearchRequest)
     - [SearchResponse](#object.SearchResponse)
     
@@ -34,7 +35,6 @@
     - [Link](#object.Link)
     - [Object](#object.Object)
     - [PublicKey](#object.PublicKey)
-    - [Range](#object.Range)
     - [SystemHeader](#object.SystemHeader)
     - [Tombstone](#object.Tombstone)
     - [Transform](#object.Transform)
@@ -308,6 +308,18 @@ in distributed system.
 | Meta | [service.ResponseMetaHeader](#service.ResponseMetaHeader) |  | ResponseMetaHeader contains meta information based on request processing by server (should be embedded into message) |
 
 
+<a name="object.Range"></a>
+
+### Message Range
+
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| Offset | [uint64](#uint64) |  | Offset of the data range |
+| Length | [uint64](#uint64) |  | Length of the data range |
+
+
 <a name="object.SearchRequest"></a>
 
 ### Message SearchRequest
@@ -430,18 +442,6 @@ in distributed system.
 | Value | [bytes](#bytes) |  | Value contains marshaled ecdsa public key |
 
 
-<a name="object.Range"></a>
-
-### Message Range
-
-
-
-| Field | Type | Label | Description |
-| ----- | ---- | ----- | ----------- |
-| Offset | [uint64](#uint64) |  | Offset of the data range |
-| Length | [uint64](#uint64) |  | Length of the data range |
-
-
 <a name="object.SystemHeader"></a>
 
 ### Message SystemHeader