[#1105] apemanager: Implement apemanager service

* Introduce grpc server for apemanager service and
  its implementation in `pkg/services/apemanager`.

Signed-off-by: Airat Arifullin <a.arifullin@yadro.com>

pkg/services/apemanager/validation.go

@@ -0,0 +1,23 @@
+package apemanager
+
+import (
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/control/server/ape"
+	apechain "git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
+)
+
+func decodeAndValidateChain(encodedChain []byte) (chain apechain.Chain, err error) {
+	if err = chain.DecodeBytes(encodedChain); err != nil {
+		return
+	}
+	for _, rule := range chain.Rules {
+		for _, name := range rule.Resources.Names {
+			if err = ape.ValidateResourceName(name); err != nil {
+				err = fmt.Errorf("invalid resource: %w", err)
+				return
+			}
+		}
+	}
+	return
+}