Add all missing docs

PkmnLib.Static/Libraries/TypeLibrary.cs

@@ -28,6 +28,9 @@ public interface IReadOnlyTypeLibrary
     /// </summary>
     float GetEffectiveness(TypeIdentifier attacking, IEnumerable<TypeIdentifier> defending);
 
+    /// <summary>
+    /// Gets the effectiveness for a single attacking type against all defending types.
+    /// </summary>
     IEnumerable<(TypeIdentifier type, float effectiveness)> GetAllEffectivenessFromAttacking(TypeIdentifier attacking);
 }