Refactor move classes to implement respective interfaces for better structure

Plugins/PkmnLib.Plugin.Gen7/Scripts/Pokemon/FlinchEffect.cs

@@ -1,10 +1,10 @@
 namespace PkmnLib.Plugin.Gen7.Scripts.Pokemon;
 
 [Script(ScriptCategory.Pokemon, "flinch_effect")]
-public class FlinchEffect : Script
+public class FlinchEffect : Script, IScriptPreventMove
 {
     /// <inheritdoc />
-    public override void PreventMove(IExecutingMove move, ref bool prevent)
+    public void PreventMove(IExecutingMove move, ref bool prevent)
     {
         prevent = true;
         var args = new CustomTriggers.OnFlinchArgs(move);