Migrate problems panel to React (#1532)

* Replace default angular app config editor

* Problems panel: migrate module to ts

* Problems panel options editor to react

* Problems panel react WIP

* Fix explore button

* Problems panel alert list layout WIP

* Refactor

* Minor tweaks on panel options

* remove outdated tests

* Update typescript

* Draft for tag event handling

* Remove unused files

src/module.ts

@@ -0,0 +1,12 @@
+import { AppPlugin } from '@grafana/data';
+import { loadPluginCss } from 'grafana/app/plugins/sdk';
+
+import './sass/grafana-zabbix.dark.scss';
+import './sass/grafana-zabbix.light.scss';
+
+loadPluginCss({
+  dark: 'plugins/alexanderzobnin-zabbix-app/css/grafana-zabbix.dark.css',
+  light: 'plugins/alexanderzobnin-zabbix-app/css/grafana-zabbix.light.css',
+});
+
+export const plugin = new AppPlugin<{}>();