Add PendingQueue messages

Author: cedric-cordenier

pkg/capabilities/actions/vault/messages.pb.go

@@ -1,5 +1,7 @@
 syntax = "proto3";
 
+import "google/protobuf/any.proto";
+
 option go_package = "github.com/smartcontractkit/chainlink-common/pkg/capabilities/actions/vault";
 
 package vault;
@@ -187,6 +189,20 @@ message StoredMetadata {
   repeated SecretIdentifier secret_identifiers = 2;
 }
 
+// IMPORTANT: this record is persisted so any changes must be
+// backwards compatible
+message StoredPendingQueueIndex {
+  int64 length = 1;
+}
+
+// IMPORTANT: this record is persisted so any changes must be
+// backwards compatible
+message StoredPendingQueueItem {
+  int64 index = 1;
+  google.protobuf.Any item = 2;
+  string id = 3;
+}
+
 message ReportingPluginConfig {
   // Plugin-specific configuration
   int32 BatchSize = 1;