Add a generic ActiveEffect class + proxy

module/documents/ActiveEffect/GenericActiveEffect.mjs

@@ -0,0 +1,7 @@
+export class DotDungeonActiveEffect extends ActiveEffect {
+
+	// Invert the logic of the disabled property so it's easier to modify via
+	// embedded controls
+	get enabled() { return !this.disabled };
+	set enabled(newValue) { this.disabled = !newValue };
+};