chore: init load tests (#7635)

* init load tests

* add machine pat

* setup app

* add introspect

* use xk6-modules repo

* logging

* add teardown

* add manipulate user

* add manipulate user

* remove logs

* convert tests to ts

* add readme

* zitadel

* review comments

load-test/package.json

@@ -0,0 +1,33 @@
+{
+    "name": "typescript",
+    "version": "1.0.0",
+    "repository": "ssh://git@github.com/zitadel/zitadel.git",
+    "author": "ZITADEL Authors <hi@zitadel.com>",
+    "engines": {
+      "node": "16 || 18 || 20"
+    },
+    "license": "Apache-2.0",
+    "devDependencies": {
+      "@babel/core": "7.23.7",
+      "@babel/plugin-proposal-class-properties": "7.13.0",
+      "@babel/plugin-proposal-object-rest-spread": "7.13.8",
+      "@babel/preset-env": "7.23.8",
+      "@babel/preset-typescript": "7.23.3",
+      "@types/k6": ">=0.50.0",
+      "@types/webpack": "5.28.5",
+      "babel-loader": "9.1.3",
+      "clean-webpack-plugin": "4.0.0",
+      "copy-webpack-plugin": "^12.0.2",
+      "typescript": "5.4.5",
+      "webpack": "5.89.0",
+      "webpack-cli": "5.1.4",
+      "webpack-glob-entries": "^1.0.1",
+      "prettier": "^3.1.1",
+      "prettier-plugin-organize-imports": "^3.2.4"
+    },
+    "scripts": {
+      "bundle": "webpack",
+      "lint": "prettier --check src",
+      "lint:fix": "prettier --write src"
+    }
+  }