Separate accounting service from it's types

Signed-off-by: Stanislav Bogatyrev <stanislav@nspcc.ru>

accounting/service.proto

@@ -5,6 +5,7 @@ package neo.fs.v2.accounting;
 option go_package = "github.com/nspcc-dev/neofs-api-go/v2/accounting/grpc;accounting";
 option csharp_namespace = "NeoFS.API.v2.Accounting";
 
+import "accounting/types.proto";
 import "refs/types.proto";
 import "service/types.proto";
 
@@ -42,15 +43,6 @@ message BalanceRequest {
   neo.fs.v2.service.RequestVerificationHeader verify_header = 3;
 }
 
-// Decimal represents the decimal numbers.
-message Decimal {
-  // value carries number value.
-  int64 value = 1;
-
-  // precision carries value precision.
-  uint32 precision = 2;
-}
-
 // Message defines the response body of Balance method.
 //
 // The amount of funds is calculated in decimal numbers.

accounting/types.proto

@@ -0,0 +1,15 @@
+syntax = "proto3";
+
+package neo.fs.v2.accounting;
+
+option go_package = "github.com/nspcc-dev/neofs-api-go/v2/accounting/grpc;accounting";
+option csharp_namespace = "NeoFS.API.v2.Accounting";
+
+// Decimal represents the decimal numbers.
+message Decimal {
+  // value carries number value.
+  int64 value = 1;
+
+  // precision carries value precision.
+  uint32 precision = 2;
+}

proto-docs/accounting.md

@@ -12,6 +12,11 @@
     - [BalanceRequest.Body](#neo.fs.v2.accounting.BalanceRequest.Body)
     - [BalanceResponse](#neo.fs.v2.accounting.BalanceResponse)
     - [BalanceResponse.Body](#neo.fs.v2.accounting.BalanceResponse.Body)
+    
+
+- [accounting/types.proto](#accounting/types.proto)
+
+  - Messages
     - [Decimal](#neo.fs.v2.accounting.Decimal)
     
 
@@ -103,6 +108,20 @@ Request body
 | ----- | ---- | ----- | ----------- |
 | balance | [Decimal](#neo.fs.v2.accounting.Decimal) |  | Carries the amount of funds on the account. |
 
+ <!-- end messages -->
+
+ <!-- end enums -->
+
+
+
+<a name="accounting/types.proto"></a>
+<p align="right"><a href="#top">Top</a></p>
+
+## accounting/types.proto
+
+
+ <!-- end services -->
+
 
 <a name="neo.fs.v2.accounting.Decimal"></a>