refactor: create network module

- move NetworkMode and SntpMode enums

Software/MainBoard/rust/src/network.rs

@@ -0,0 +1,19 @@
+use alloc::string::String;
+use chrono::{DateTime, Utc};
+use serde::Serialize;
+
+#[derive(Serialize, Debug, PartialEq)]
+pub enum SntpMode {
+    OFFLINE,
+    SYNC { current: DateTime<Utc> },
+}
+
+#[derive(Serialize, Debug, PartialEq)]
+pub enum NetworkMode {
+    WIFI {
+        sntp: SntpMode,
+        mqtt: bool,
+        ip_address: String,
+    },
+    OFFLINE,
+}