feat: create empty network module

rust/src/main.rs

@@ -68,6 +68,7 @@ mod fat_error;
 mod hal;
 mod log;
 mod mqtt;
+mod network;
 mod plant_state;
 mod tank;
 mod webserver;

rust/src/network.rs

@@ -0,0 +1 @@
+// Network stack spawning module