Adds doccomments to all abilities

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

@@ -1,5 +1,11 @@
 namespace PkmnLib.Plugin.Gen7.Scripts.Abilities;
 
+/// <summary>
+/// Aftermath is an ability that causes the attacker to lose 1/4 of its maximum HP if it knocks out the user with a contact move.
+/// This effect only triggers if the move that caused the faint was a contact move.
+///
+/// <see href="https://bulbapedia.bulbagarden.net/wiki/Aftermath_(Ability)">Bulbapedia - Aftermath</see>
+/// </summary>
 [Script(ScriptCategory.Ability, "aftermath")]
 public class Aftermath : Script
 {