Adds a large amount of the WASM interface

src/dynamic_data/models/battle.rs

@@ -405,3 +405,10 @@ pub enum BattleResult {
     /// The battle has a winner, with the inner value being the index of the side that has won.
     Conclusive(u8),
 }
+
+impl BattleResult {
+    /// Whether or not the battle has a winner.
+    pub fn is_conclusive(&self) -> bool {
+        matches!(self, Self::Conclusive(_))
+    }
+}