feat: set hostname for the device

Cargo.toml

@@ -35,10 +35,12 @@ critical-section = "1.2.0"
 static_cell = "2.1.1"
 
 embassy-net = { version = "0.9.0", features = [
-  "dhcpv4",
+  "defmt",
+  "dhcpv4-hostname",
   "medium-ethernet",
   "tcp",
   "dns",
+  "mdns",
 ] }
 esp-radio = { version = "0.18.0", features = [
   "defmt",

src/bin/main.rs

@@ -83,7 +83,9 @@ async fn main(spawner: Spawner) -> ! {
     )
     .expect("Failed to initialize Wi-Fi controller");
 
-    let net_config = embassy_net::Config::dhcpv4(Default::default());
+    let mut dhcp_config = embassy_net::DhcpConfig::default();
+    dhcp_config.hostname = Some("cover-theif".try_into().unwrap());
+    let net_config = embassy_net::Config::dhcpv4(dhcp_config);
 
     let rng = esp_hal::rng::Rng::new();
     let seed = (rng.random() as u64) << 32 | rng.random() as u64;