refactor: move net_task to network module

rust/src/network.rs

@@ -1,5 +1,7 @@
 use alloc::string::String;
 use chrono::{DateTime, Utc};
+use embassy_net::Runner;
+use esp_radio::wifi::Interface;
 use serde::Serialize;
 
 #[derive(Serialize, Debug, PartialEq)]
@@ -17,3 +19,8 @@ pub enum NetworkMode {
     },
     OFFLINE,
 }
+
+#[embassy_executor::task(pool_size = 2)]
+pub(crate) async fn net_task(mut runner: Runner<'static, Interface<'static>>) {
+    runner.run().await;
+}