feat: refactor async task and remove tokio as dep

crates/app/src/views/app.rs

@@ -8,7 +8,6 @@ use nostr_sdk::prelude::*;
 use serde::Deserialize;
 use state::get_client;
 use std::sync::Arc;
-use tokio::sync::oneshot;
 use ui::{
     button::{Button, ButtonRounded, ButtonVariants},
     dock_area::{dock::DockPlacement, DockArea, DockItem},

crates/app/src/views/chat.rs

@@ -19,7 +19,6 @@ use nostr_sdk::prelude::*;
 use smol::fs;
 use state::get_client;
 use std::sync::Arc;
-use tokio::sync::oneshot;
 use ui::{
     button::{Button, ButtonRounded, ButtonVariants},
     dock_area::panel::{Panel, PanelEvent},

crates/app/src/views/contacts.rs

@@ -6,7 +6,6 @@ use gpui::{
 };
 use nostr_sdk::prelude::*;
 use state::get_client;
-use tokio::sync::oneshot;
 use ui::{
     button::Button,
     dock_area::panel::{Panel, PanelEvent},

crates/app/src/views/onboarding.rs

@@ -6,7 +6,6 @@ use gpui::{
 use nostr_connect::prelude::*;
 use state::get_client;
 use std::{path::PathBuf, time::Duration};
-use tokio::sync::oneshot;
 use ui::{
     button::{Button, ButtonCustomVariant, ButtonVariants},
     input::{InputEvent, TextInput},

crates/app/src/views/profile.rs

@@ -9,7 +9,6 @@ use nostr_sdk::prelude::*;
 use smol::fs;
 use state::get_client;
 use std::str::FromStr;
-use tokio::sync::oneshot;
 use ui::{
     button::{Button, ButtonVariants},
     dock_area::panel::{Panel, PanelEvent},

crates/app/src/views/relays.rs

@@ -4,7 +4,6 @@ use gpui::{
 };
 use nostr_sdk::prelude::*;
 use state::get_client;
-use tokio::sync::oneshot;
 use ui::{
     button::{Button, ButtonVariants},
     input::{InputEvent, TextInput},

crates/app/src/views/sidebar/compose.rs

@@ -14,7 +14,6 @@ use serde::Deserialize;
 use smol::Timer;
 use state::get_client;
 use std::{collections::HashSet, time::Duration};
-use tokio::sync::oneshot;
 use ui::{
     button::{Button, ButtonRounded},
     input::{InputEvent, TextInput},