feat: Reliable Peer Discovery (#408)

* feat(swap): Allow discovery at multiple rendezvous points, request quotes from locally stored peers

- Ensure uniqueness of the peer_addresses table (no duplicate entries)
- Add peer to local database even if we just request a quote, and no swap (call to list_sellers)
- Refactor list_sellers to take multiple rendezvous points
- Allow db to be passed into list_sellers, if so request quote from all locally stored peers

* feat: editable list of rendezvous points in settings, new maker box on help page

* Recover old commits

* fix small compile errors due to rebase

* amend

* fixes

* fix(gui): Do not display "Core components are loading..." spinner

* fix(gui): Prefer makers with m.minSwapAmount > 0 BTC

* feat(cli, gui): Fetch version of maker

* feat: display progress bar

src-gui/src/renderer/rpc.ts

@@ -43,13 +43,13 @@ import { CliLog } from "models/cliModel";
 import { logsToRawString, parseLogsFromString } from "utils/parseUtils";
 
 export const PRESET_RENDEZVOUS_POINTS = [
-  "/dns4/discover.unstoppableswap.net/tcp/8888/p2p/12D3KooWA6cnqJpVnreBVnoro8midDL9Lpzmg8oJPoAGi7YYaamE",
+  "/dnsaddr/xxmr.cheap/p2p/12D3KooWMk3QyPS8D1d1vpHZoY7y2MnXdPE5yV6iyPvyuj4zcdxT",
 ];
 
 export async function fetchSellersAtPresetRendezvousPoints() {
   await Promise.all(
     PRESET_RENDEZVOUS_POINTS.map(async (rendezvousPoint) => {
-      const response = await listSellersAtRendezvousPoint(rendezvousPoint);
+      const response = await listSellersAtRendezvousPoint([rendezvousPoint]);
       store.dispatch(discoveredMakersByRendezvous(response.sellers));
 
       logger.info(
@@ -206,10 +206,10 @@ export async function redactLogs(
 }
 
 export async function listSellersAtRendezvousPoint(
-  rendezvousPointAddress: string,
+  rendezvousPointAddresses: string[],
 ): Promise<ListSellersResponse> {
   return await invoke<ListSellersArgs, ListSellersResponse>("list_sellers", {
-    rendezvous_point: rendezvousPointAddress,
+    rendezvous_points: rendezvousPointAddresses,
   });
 }