Adds doccomments to all abilities

Plugins/PkmnLib.Plugin.Gen7/Scripts/Abilities/Berserk.cs

@@ -1,5 +1,11 @@
 namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
 
+/// <summary>
+/// Berserk is an ability that raises the user's Special Attack by one stage when its HP drops below half due to damage.
+/// This effect only activates if the HP drops below half as a result of damage, not from other effects.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Berserk_(Ability)">Bulbapedia - Berserk</see>
+/// </summary>
 [Script(ScriptCategory.Ability, "berserk")]
 public class Berserk : Script
 {