First couple abilities implemented

PkmnLib.Static/Species/Ability.cs

@@ -23,6 +23,8 @@ public interface IAbility : INamedValue
     /// Checks whether the ability has a specific flag. 
     /// </summary>
     bool HasFlag(StringKey key);
+
+    bool CanBeChanged { get; }
 }
 
 /// <inheritdoc />
@@ -30,12 +32,13 @@ public class AbilityImpl : IAbility
 {
     /// <inheritdoc cref="AbilityImpl" />
     public AbilityImpl(StringKey name, StringKey? effect, IReadOnlyDictionary<StringKey, object?> parameters,
-        ImmutableHashSet<StringKey> flags)
+        ImmutableHashSet<StringKey> flags, bool canBeChanged)
     {
         Name = name;
         Effect = effect;
         Parameters = parameters;
         Flags = flags;
+        CanBeChanged = canBeChanged;
     }
 
     /// <inheritdoc />
@@ -54,6 +57,9 @@ public class AbilityImpl : IAbility
 
     /// <inheritdoc />
     public bool HasFlag(StringKey key) => Flags.Contains(key);
+
+    /// <inheritdoc />
+    public bool CanBeChanged { get; }
 }
 
 /// <summary>