* Add plugin option for protogen in Makefile
* Fix the generator for the plugin in util/protogen
* Erase convertable types, move helpful methods to gRPC protobufs
* Erase helpers for convertations
* Generate StableMarshlal/StableSize for protobufs by the protoc plugin
Signed-off-by: Airat Arifullin a.arifullin@yadro.com
Chained verification is done in a single thread there is no need to use
pool to do this. Also because newly allocated items are 5 MiB in size
we can run out of memory given that typical header it much less in size.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
