chore: Refactor client plugin management (#7053)

* Update clientside plugin management to work as server

* docs

* tsc

* Rebase main

plugins/github/client/index.tsx

@@ -0,0 +1,16 @@
+import * as React from "react";
+import { Hook, PluginManager } from "~/utils/PluginManager";
+import config from "../plugin.json";
+import Icon from "./Icon";
+
+PluginManager.add([
+  {
+    ...config,
+    type: Hook.Settings,
+    value: {
+      group: "Integrations",
+      icon: Icon,
+      component: React.lazy(() => import("./Settings")),
+    },
+  },
+]);