feat: backport automod (#8886)

Co-authored-by: Aura Román <kyradiscord@gmail.com>

src/client/actions/AutoModerationRuleUpdate.js

@@ -0,0 +1,29 @@
+'use strict';
+
+const Action = require('./Action');
+const { Events } = require('../../util/Constants');
+
+class AutoModerationRuleUpdateAction extends Action {
+  handle(data) {
+    const { client } = this;
+    const guild = client.guilds.cache.get(data.guild_id);
+
+    if (guild) {
+      const oldAutoModerationRule = guild.autoModerationRules.cache.get(data.id)?._clone() ?? null;
+      const newAutoModerationRule = guild.autoModerationRules._add(data);
+
+      /**
+       * Emitted whenever an auto moderation rule gets updated.
+       * <info>This event requires the {@link Permissions.FLAGS.MANAGE_GUILD} permission.</info>
+       * @event Client#autoModerationRuleUpdate
+       * @param {?AutoModerationRule} oldAutoModerationRule The auto moderation rule before the update
+       * @param {AutoModerationRule} newAutoModerationRule The auto moderation rule after the update
+       */
+      client.emit(Events.AUTO_MODERATION_RULE_UPDATE, oldAutoModerationRule, newAutoModerationRule);
+    }
+
+    return {};
+  }
+}
+
+module.exports = AutoModerationRuleUpdateAction;