Plugin extensions: Add e2e tests (#89048)

* add custom plugins

* update bundles

* provision app plugins and their dashboards

* add one more script that run e2e tests using e2e test server

* add e2e tests

* regenerate jsonnet dashboards

* ignore custom plugins and playwright report

* use minified

* cleanup tests

* update codeowners

* add leading slash

* document new script

* document custom-plugins

* cleanup

* twist modules

* add readme

e2e/plugin-e2e/start-and-run-suite

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+. scripts/grafana-server/variables
+
+LICENSE_PATH=""
+
+if [ "$1" = "enterprise" ]; then
+    if [ "$2" != "dev" ] && [ "$2" != "debug" ]; then
+      LICENSE_PATH=$2/license.jwt
+    else
+      LICENSE_PATH=$3/license.jwt
+    fi
+fi
+
+if [ "$BASE_URL" != "" ]; then
+    echo -e "BASE_URL set, skipping starting server"
+else
+  # Start it in the background
+  ./scripts/grafana-server/start-server $LICENSE_PATH 2>&1 > scripts/grafana-server/server.log &
+  ./scripts/grafana-server/wait-for-grafana
+fi
+
+PORT=3001 HOST=localhost yarn playwright test