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/components/pages/help/SettingsPage.tsx

@@ -4,6 +4,7 @@ import DonateInfoBox from "./DonateInfoBox";
 import DaemonControlBox from "./DaemonControlBox";
 import SettingsBox from "./SettingsBox";
 import ExportDataBox from "./ExportDataBox";
+import DiscoveryBox from "./DiscoveryBox";
 import { useLocation } from "react-router-dom";
 import { useEffect } from "react";
 
@@ -27,6 +28,7 @@ export default function SettingsPage() {
       }}
     >
       <SettingsBox />
+      <DiscoveryBox />
       <ExportDataBox />
       <DaemonControlBox />
       <DonateInfoBox />