feat(gui): Allow discovery of sellers via connecting to rendezvous point (#83)

We,
- add a new list_sellers Tauri IPC command
- we rename the Seller struct to AliceAddress to name clash

src-gui/src/renderer/rpc.ts

@@ -8,6 +8,7 @@ import {
   GetLogsArgs,
   GetLogsResponse,
   GetSwapInfoResponse,
+  ListSellersArgs,
   MoneroRecoveryArgs,
   ResumeSwapArgs,
   ResumeSwapResponse,
@@ -27,6 +28,7 @@ import { store } from "./store/storeRenderer";
 import { Provider } from "models/apiModel";
 import { providerToConcatenatedMultiAddr } from "utils/multiAddrUtils";
 import { MoneroRecoveryResponse } from "models/rpcModel";
+import { ListSellersResponse } from "../models/tauriModel";
 
 export async function initEventListeners() {
   // This operation is in-expensive
@@ -144,3 +146,11 @@ export async function getLogsOfSwap(
     redact,
   });
 }
+
+export async function listSellersAtRendezvousPoint(
+  rendezvousPointAddress: string,
+): Promise<ListSellersResponse> {
+  return await invoke<ListSellersArgs, ListSellersResponse>("list_sellers", {
+    rendezvous_point: rendezvousPointAddress,
+  });
+}