Add week 8 materials

materials/08-scaling/seminar/load-balancing-lab/src/config.rs

@@ -0,0 +1,8 @@
+use serde::Deserialize;
+
+#[derive(Deserialize)]
+pub struct Config {
+    pub balancer: String,
+    pub n_balancers: u32,
+    pub sync_interval: f64,
+}