Migrate from grpc to grpc-js.

- Change app dependency from `"grpc"` to `"@grpc-js"`.
- Regenerate all proto files with `generate_package_definition` flag.
- Remove unused files `annotations_pb.js` and `http_pb.js`, and don't regenerate them `regen.sh`.
- In the `regen.sh` for LN protos, use protoc installed locally in node_modules rather than one provided by the system.

app/middleware/grpc/client.js

@@ -1,18 +1,20 @@
 process.env["GRPC_SSL_CIPHER_SUITES"] = "HIGH+ECDSA";
 
-import grpc from "grpc";
+const grpc = require("@grpc/grpc-js");
 
 import { getWalletCert } from "config.js";
 import { getWalletPath } from "main_dev/paths.js";
-const services = require("../walletrpc/api_grpc_pb.js");
+
+const proto = require("../walletrpc/api_grpc_pb.js");
+const services = grpc.loadPackageDefinition(proto).walletrpc;
 
 const getServiceClient = (clientClass) => (
   isTestNet,
   walletPath,
   address,
   port,
   grpcKey,
-  grpccert,
+  grpcCert,
   cb
 ) => {
   const cert = getWalletCert(getWalletPath(isTestNet, walletPath));
@@ -26,9 +28,12 @@ const getServiceClient = (clientClass) => (
   try {
     // dcrwallet sends the key and cert on the same payload after starting.
     // So we can use the same value for both of them.
-    const creds = grpc.credentials.createSsl(cert, grpcKey, grpccert);
+    const creds = grpc.credentials.createSsl(
+      cert,
+      Buffer.from(grpcKey),
+      Buffer.from(grpcCert)
+    );
     const client = new clientClass(address + ":" + port, creds);
-
     const deadline = new Date();
     const deadlineInSeconds = 30;
     deadline.setSeconds(deadline.getSeconds() + deadlineInSeconds);
@@ -44,20 +49,30 @@ const getServiceClient = (clientClass) => (
   }
 };
 
-export const getWalletService = getServiceClient(services.WalletServiceClient);
+export const getWalletService = getServiceClient(
+  services.WalletService
+);
 export const getTicketBuyerV2Service = getServiceClient(
-  services.TicketBuyerV2ServiceClient
+  services.TicketBuyerV2Service
+);
+export const loader = getServiceClient(
+  services.WalletLoaderService
+);
+export const getSeedService = getServiceClient(
+  services.SeedService
 );
-export const loader = getServiceClient(services.WalletLoaderServiceClient);
-export const getSeedService = getServiceClient(services.SeedServiceClient);
 export const getVersionService = getServiceClient(
-  services.VersionServiceClient
+  services.VersionService
+);
+export const getVotingService = getServiceClient(
+  services.VotingService
+);
+export const getAgendaService = getServiceClient(
+  services.AgendaService
 );
-export const getVotingService = getServiceClient(services.VotingServiceClient);
-export const getAgendaService = getServiceClient(services.AgendaServiceClient);
 export const getMessageVerificationService = getServiceClient(
-  services.MessageVerificationServiceClient
+  services.MessageVerificationService
 );
 export const getAccountMixerService = getServiceClient(
-  services.AccountMixerServiceClient
+  services.AccountMixerService
 );

app/middleware/ln/client.js

@@ -1,11 +1,17 @@
 process.env["GRPC_SSL_CIPHER_SUITES"] = "HIGH+ECDSA";
 
-import grpc from "grpc";
+const grpc = require("@grpc/grpc-js");
 import fs from "fs";
 
-const services = require("./rpc_grpc_pb.js");
-const wuServices = require("./walletunlocker_grpc_pb.js");
-const wtServices = require("./wtclient_grpc_pb.js");
+
+const proto = require("./rpc_grpc_pb.js");
+const services = grpc.loadPackageDefinition(proto).lnrpc;
+
+const wuProto =  require("./walletunlocker_grpc_pb.js");
+const wuServices = grpc.loadPackageDefinition(wuProto).lnrpc;
+
+const wtProto =  require("./wtclient_grpc_pb.js");
+const wtServices = grpc.loadPackageDefinition(wtProto).wtclientrpc;
 
 const getServiceClient = (clientClass) => async (
   address,
@@ -75,8 +81,12 @@ const getServiceClient = (clientClass) => async (
   });
 };
 
-export const getLightningClient = getServiceClient(services.LightningClient);
-export const getWatchtowerClient = getServiceClient(wtServices.WatchtowerClientClient);
+export const getLightningClient = getServiceClient(
+  services.Lightning
+);
+export const getWatchtowerClient = getServiceClient(
+  wtServices.WatchtowerClient
+);
 export const getWalletUnlockerClient = getServiceClient(
-  wuServices.WalletUnlockerClient
+  wuServices.WalletUnlocker
 );