Add member_leave automod trigger

At least i think so - cant test it until knub changes are done

backend/src/plugins/Automod/events/RunAutomodOnJoinEvt.ts

@@ -1,27 +0,0 @@
-import { typedGuildEventListener } from "knub";
-import { RecentActionType } from "../constants";
-import { runAutomod } from "../functions/runAutomod";
-import { AutomodContext, AutomodPluginType } from "../types";
-
-export const RunAutomodOnJoinEvt = typedGuildEventListener<AutomodPluginType>()({
-  event: "guildMemberAdd",
-  listener({ pluginData, args: { member } }) {
-    const context: AutomodContext = {
-      timestamp: Date.now(),
-      user: member.user,
-      member,
-      joined: true,
-    };
-
-    pluginData.state.queue.add(() => {
-      pluginData.state.recentActions.push({
-        type: RecentActionType.MemberJoin,
-        context,
-        count: 1,
-        identifier: null,
-      });
-
-      runAutomod(pluginData, context);
-    });
-  },
-});