Storage: k6 tests (#57496)

* object store k6

* update script

* refactor

* rename scripts

* fix paths

* fixes

* fix client - check connected state

* add teardown timeout

* rename to grpc object store client

* fail if health check fails

* abort rather than fail

* stale import

* create `run.sh`

* adjust for dummy server

* fix mkdir

* clean up dependencies

* remove name and version

* bring back name and version!

* remove clean webpackk plugin

* remove copy plugin

* update yarn lock

* remove stale import

* update yarn lock

* move perf tests to devenv/docker/loadtest-ts

* add codeownres

devenv/docker/loadtest-ts/.babelrc

@@ -0,0 +1,10 @@
+{
+  "presets": [
+    "@babel/env",
+    "@babel/typescript"
+  ],
+  "plugins": [
+    "@babel/proposal-class-properties",
+    "@babel/proposal-object-rest-spread"
+  ]
+}