feat: refine the search bar (#207)

* update deps

* refactor the search cancellation

* .

* .

crates/common/src/constants.rs

@@ -11,7 +11,11 @@ pub const BOOTSTRAP_RELAYS: [&str; 5] = [
 ];
 
 /// Search Relays.
-pub const SEARCH_RELAYS: [&str; 1] = ["wss://relay.nostr.band"];
+pub const SEARCH_RELAYS: [&str; 3] = [
+    "wss://relay.nostr.band",
+    "wss://search.nos.today",
+    "wss://relay.noswhere.com",
+];
 
 /// Default relay for Nostr Connect
 pub const NOSTR_CONNECT_RELAY: &str = "wss://relay.nsec.app";