chore: improve web support (#36)

Reviewed-on: #36

crates/chat/Cargo.toml

@@ -13,6 +13,7 @@ settings = { path = "../settings" }
 
 gpui.workspace = true
 nostr-sdk.workspace = true
+instant.workspace = true
 
 anyhow.workspace = true
 itertools.workspace = true
@@ -20,6 +21,7 @@ smallvec.workspace = true
 log.workspace = true
 flume.workspace = true
 
+futures.workspace = true
 fuzzy-matcher = "0.3.7"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]