Add support for v0.11 GRPC services

This also refactors the client GRPC wrapper to dynamically load the
request objects.
All GRPC generated client files now live under lib/grpc_services

lib/grpc_services/walletunlocker_pb.rb

@@ -0,0 +1,51 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: walletunlocker.proto
+
+require 'google/protobuf'
+
+require 'rpc_pb'
+Google::Protobuf::DescriptorPool.generated_pool.build do
+  add_file("walletunlocker.proto", :syntax => :proto3) do
+    add_message "lnrpc.GenSeedRequest" do
+      optional :aezeed_passphrase, :bytes, 1
+      optional :seed_entropy, :bytes, 2
+    end
+    add_message "lnrpc.GenSeedResponse" do
+      repeated :cipher_seed_mnemonic, :string, 1
+      optional :enciphered_seed, :bytes, 2
+    end
+    add_message "lnrpc.InitWalletRequest" do
+      optional :wallet_password, :bytes, 1
+      repeated :cipher_seed_mnemonic, :string, 2
+      optional :aezeed_passphrase, :bytes, 3
+      optional :recovery_window, :int32, 4
+      optional :channel_backups, :message, 5, "lnrpc.ChanBackupSnapshot"
+    end
+    add_message "lnrpc.InitWalletResponse" do
+    end
+    add_message "lnrpc.UnlockWalletRequest" do
+      optional :wallet_password, :bytes, 1
+      optional :recovery_window, :int32, 2
+      optional :channel_backups, :message, 3, "lnrpc.ChanBackupSnapshot"
+    end
+    add_message "lnrpc.UnlockWalletResponse" do
+    end
+    add_message "lnrpc.ChangePasswordRequest" do
+      optional :current_password, :bytes, 1
+      optional :new_password, :bytes, 2
+    end
+    add_message "lnrpc.ChangePasswordResponse" do
+    end
+  end
+end
+
+module Lnrpc
+  GenSeedRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("lnrpc.GenSeedRequest").msgclass
+  GenSeedResponse = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("lnrpc.GenSeedResponse").msgclass
+  InitWalletRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("lnrpc.InitWalletRequest").msgclass
+  InitWalletResponse = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("lnrpc.InitWalletResponse").msgclass
+  UnlockWalletRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("lnrpc.UnlockWalletRequest").msgclass
+  UnlockWalletResponse = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("lnrpc.UnlockWalletResponse").msgclass
+  ChangePasswordRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("lnrpc.ChangePasswordRequest").msgclass
+  ChangePasswordResponse = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("lnrpc.ChangePasswordResponse").msgclass
+end