[#1635] cli: Add command to get object's shard info

Added `frostfs-cli object locate` subcommand. It lists info
about shards storing an object.

Signed-off-by: Ekaterina Lebedeva <ekaterina.lebedeva@yadro.com>

cmd/frostfs-cli/modules/control/root.go

@@ -39,6 +39,7 @@ func init() {
 		listRulesCmd,
 		getRuleCmd,
 		listTargetsCmd,
+		locateObjectCmd,
 	)
 
 	initControlHealthCheckCmd()
@@ -52,4 +53,5 @@ func init() {
 	initControlListRulesCmd()
 	initControGetRuleCmd()
 	initControlListTargetsCmd()
+	initControlLocateObjectCmd()
 }