Protobuf refactor proposal

[vovapi]

• Fix typo: NodeCommuunications:
  

  Multy-back/node-streamer/eth/streamer.proto

  Line 5 in 53b5704

  service NodeCommuunications {

• Remove unnecessary curly braces for rpc declaration
  

  Multy-back/node-streamer/eth/streamer.proto

  Lines 7 to 8 in 53b5704

  	rpc ServiceInfo (Empty) returns (ServiceVersion){
  	}

• Remove unnecessary Event prefixes for rpc endpoints:
  

  Multy-back/node-streamer/eth/streamer.proto

  Line 13 in 53b5704

  rpc EventInitialAdd (UsersData) returns (ReplyInfo){

• Rename AddressToResync to address, 'cause it's just an address:
  

  Multy-back/node-streamer/eth/streamer.proto

  Lines 133 to 135 in 53b5704

  	message AddressToResync {
  	string address = 1;
  	}

• Remove reply info, 'cause gRPC returns golang errors
  

  Multy-back/node-streamer/eth/streamer.proto

  Lines 150 to 155 in 53b5704

  	message ReplyInfo {
  	string message = 1;
  	}
  	message ServiceVersion {
  	string branch = 1;

• Remove unnecessary wallet info (WalletIndex, WalletIndex) from node service, it should be tracked on main, Multy-Back service:
  

  Multy-back/node-streamer/eth/streamer.proto

  Lines 145 to 147 in 53b5704

  	int32 WalletIndex = 2;
  	int32 AddressIndex = 3;
  	}

• Use Google.Protobuf.WellKnownTypes.Empty instead of redeclaring Empty message
• Use protobuf style guide for names - no CamelCase field names, only underscore_case