Implement very basic and bad and specific netcode

The game can now retrieve its seed from another game on the network

src/game/seed.rs

@@ -8,6 +8,7 @@ use rand::random;
 pub struct Seed(u64);
 
 impl Seed {
+    /// Use a random integer as the seed
     pub fn random() -> Self {
         Self(random())
     }
@@ -30,3 +31,15 @@ impl From<Seed> for [u8; 8] {
         value.0.to_le_bytes()
     }
 }
+
+impl From<u64> for Seed {
+    fn from(value: u64) -> Self {
+        Seed(value)
+    }
+}
+
+impl From<Seed> for u64 {
+    fn from(value: Seed) -> Self {
+        value.0
+    }
+}