fix(lnd-proto-dup): Fix that we had redundant lnd rpc.proto files

Only one of these files was being used, and they were going out of step
relative to one another.

Put rpc.proto in the resources directory for consistency with other
vendored resources, i.e. the lnd binary

Updated the def from:
https://github.com/lightningnetwork/lnd/blob/master/lnrpc/rpc.proto

app/lnd/config/index.js

@@ -43,7 +43,7 @@ if (process.env.NODE_ENV === 'development') {
 export default {
   lnd: () => ({
     lndPath,
-    lightningRpc: `${__dirname}/rpc.proto`,
+    lightningRpc: join(__dirname, 'rpc.proto'),
     lightningHost: store.get('host') || 'localhost:10009',
     cert: store.get('cert') || join(userInfo().homedir, loc),
     macaroon: store.get('macaroon') || join(userInfo().homedir, macaroonPath)

app/lnd/config/rpc.proto

@@ -1673,4 +1673,5 @@ message ForwardingHistoryResponse {
 
    /// The index of the last time in the set of returned forwarding events. Can be used to seek further, pagination style.
    uint32 last_offset_index = 2 [json_name = "last_offset_index"];
-}
+}
+

app/lnd/lib/lightning.js

@@ -22,7 +22,7 @@ const lightning = (rpcpath, host) => {
   const lndConfig = config.lnd()
   const lndCert = fs.readFileSync(lndConfig.cert)
   const sslCreds = grpc.credentials.createSsl(lndCert)
-  const rpc = grpc.load(path.join(__dirname, 'rpc.proto'))
+  const rpc = grpc.load(path.join(__dirname, '..', 'rpc.proto'))
 
   const metadata = new grpc.Metadata()
   const macaroonHex = fs.readFileSync(lndConfig.macaroon).toString('hex')

app/lnd/lib/walletUnlocker.js

@@ -22,7 +22,7 @@ const walletUnlocker = (rpcpath, host) => {
   const lndConfig = config.lnd()
   const lndCert = fs.readFileSync(lndConfig.cert)
   const credentials = grpc.credentials.createSsl(lndCert)
-  const rpc = grpc.load(path.join(__dirname, 'rpc.proto'))
+  const rpc = grpc.load(path.join(__dirname, '..', 'rpc.proto'))
 
   return new rpc.lnrpc.WalletUnlocker(host, credentials)
 }

package.json

@@ -51,8 +51,7 @@
       "app.html",
       "main.prod.js",
       "main.prod.js.map",
-      "package.json",
-      "rpc.proto"
+      "package.json"
     ],
     "dmg": {
       "icon": "./resources/icon.icns",
@@ -86,6 +85,7 @@
       "output": "release"
     },
     "extraResources": [
+      "./rpc.proto",
       {
         "from": "./resources/bin/win32/lnd.exe",
         "to": "./bin/lnd.exe"