Pull in code from pool_elo

need to re-integrate yugioh code

src/state_enums.rs

@@ -0,0 +1,37 @@
+use std::fmt::Display;
+
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Clone)]
+pub enum LoginState {
+    Authenticated,
+    NotAuthenticated,
+    Unknown,
+}
+
+#[derive(Serialize, Deserialize, Clone)]
+pub enum ContentState {
+    None,
+    Inventory,
+    Tournaments,
+}
+
+impl Display for ContentState {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{}",
+            match self {
+                ContentState::Inventory => "Inventory",
+                ContentState::Tournaments => "Tournament",
+                ContentState::None => "",
+            }
+        )
+    }
+}
+
+#[derive(Serialize, Deserialize, Clone)]
+pub enum OpenState {
+    Open,
+    Closed,
+}