fix(raiden): add getRoutes and getHeight compatibility

In this commit we're modifying `RaidenClient.getRoutes` and `getHeight`
to be compatibile with the current `Swaps` implementation.

Author: Karl Ranna

lib/BaseClient.ts

@@ -1,7 +1,6 @@
 import Logger from './Logger';
 import { EventEmitter } from 'events';
-import { SwapDeal } from './swaps/types';
-import { Route } from './proto/lndrpc_pb';
+import { SwapDeal, Route } from './swaps/types';
 import { SwapClient } from './constants/enums';
 
 enum ClientStatus {

lib/lndclient/LndClient.ts

@@ -223,7 +223,7 @@ class LndClient extends BaseClient {
 
     if (deal.makerToTakerRoutes && deal.role === SwapRole.Maker) {
       const request = new lndrpc.SendToRouteRequest();
-      request.setRoutesList(deal.makerToTakerRoutes);
+      request.setRoutesList(deal.makerToTakerRoutes as lndrpc.Route[]);
       request.setPaymentHashString(deal.rHash);
 
       try {

lib/raidenclient/RaidenClient.ts

@@ -136,11 +136,14 @@ class RaidenClient extends BaseClient {
   }
 
   public getRoutes =  async (_amount: number, _destination: string) => {
-    return []; // stub placeholder, query routes not currently implemented in raiden
+    // stub placeholder, query routes not currently implemented in raiden
+    return [{
+      getTotalTimeLock: () => 1,
+    }];
   }
 
   public getHeight = async () => {
-    return 0; // raiden's API does not tell us the height
+    return 1; // raiden's API does not tell us the height
   }
 
   public getRaidenInfo = async (): Promise<RaidenInfo> => {

lib/swaps/types.ts

@@ -1,5 +1,4 @@
 import { SwapRole, SwapPhase, SwapState, SwapFailureReason } from '../constants/enums';
-import { Route } from '../proto/lndrpc_pb';
 
 export type SwapDeal = {
   /** Our role in the swap. */
@@ -76,3 +75,7 @@ export type SwapFailure = Pick<SwapDeal, 'orderId' | 'pairId' | 'quantity' | 'pe
   quantity: number;
   failureReason: SwapFailureReason;
 };
+
+export type Route = {
+  getTotalTimeLock: Function,
+};