Created basic system to allow multiple integrations to register themselves, creating a separate tab in the admin interface for each one.

assets/javascripts/discourse/chat-route-map.js.es6

@@ -0,0 +1,7 @@
+export default {
+  resource: 'admin.adminPlugins',
+  path: '/plugins',
+  map() {
+    this.route('chat');
+  }
+};

assets/javascripts/discourse/controllers/admin-plugins-chat.js.es6

@@ -0,0 +1,3 @@
+export default Ember.Controller.extend({
+
+});

assets/javascripts/discourse/routes/admin-plugins-chat.js.es6

@@ -0,0 +1,9 @@
+import { ajax } from 'discourse/lib/ajax';
+
+export default Discourse.Route.extend({
+  model() {
+    return ajax("/chat/list-integrations.json").then(result => {
+      return result.chat;
+    });
+  }
+});

assets/javascripts/discourse/templates/admin/plugins-chat.hbs

@@ -0,0 +1,12 @@
+<div class='admin-chat'>
+  <div class="admin-controls">
+    <div class="span15">
+
+      <ul class="nav nav-pills">
+      	{{#each model as |provider|}}
+        	{{nav-item label=(concat 'chat.integration.' provider '.title')}}
+        {{/each}}
+      </ul>
+    </div>
+  </div>
+</div>

config/locales/client.en.yml

@@ -1,4 +1,10 @@
 en:
   js:
-    discourse_chat:
+    chat:
+      menu_title: "Chat Integrations"
 
+      integration:
+        telegram:
+          title: "Telegram"
+        slack:
+          title: "Slack"

lib/integration.rb

@@ -0,0 +1,12 @@
+module DiscourseChat
+	module Integration
+		def self.integrations
+	      constants.select do |constant|
+	        constant.to_s =~ /Integration$/
+	      end.map(&method(:const_get))
+	    end
+	end
+end
+
+require_relative "integration/slack/slack_integration.rb"
+require_relative "integration/telegram/telegram_integration.rb"

lib/integration/slack/slack_integration.rb

@@ -0,0 +1,7 @@
+module DiscourseChat
+	module Integration
+		module SlackIntegration
+			INTEGRATION_NAME = "slack".freeze
+		end
+	end
+end

lib/integration/telegram/telegram_integration.rb

@@ -0,0 +1,7 @@
+module DiscourseChat
+	module Integration
+		module TelegramIntegration
+			INTEGRATION_NAME = "telegram".freeze
+		end
+	end
+end

plugin.rb

@@ -15,4 +15,33 @@ after_initialize do
       isolate_namespace DiscourseChat
     end
   end
+
+  require_relative "lib/integration"
+
+  class ::DiscourseChat::ChatController < ::ApplicationController
+    requires_plugin DiscourseChat::PLUGIN_NAME
+
+    def list_integrations
+      render json: ::DiscourseChat::Integration.integrations.map {|x| x::INTEGRATION_NAME}
+    end
+
+  end
+
+  require_dependency 'admin_constraint'
+
+
+  add_admin_route 'chat.menu_title', 'chat'
+
+  DiscourseChat::Engine.routes.draw do
+    get "/list-integrations" => "chat#list_integrations", constraints: AdminConstraint.new
+  end
+
+  Discourse::Application.routes.prepend do
+    mount ::DiscourseChat::Engine, at: "/chat"
+  end
+
+  Discourse::Application.routes.append do
+    get '/admin/plugins/chat' => 'admin/plugins#index', constraints: StaffConstraint.new
+  end
+
 end