Fix windows not being able to build new Feature packages (#7220)

* Add missing dev script

Signed-off-by: Janne Savolainen <janne.savolainen@live.fi>

* Inline all shared scripts to make them work in all environments

Signed-off-by: Janne Savolainen <janne.savolainen@live.fi>

* Switch to using deterministic fake for path.join in unit test

Signed-off-by: Janne Savolainen <janne.savolainen@live.fi>

* Make multi export config for webpack not fail when used in windows

Signed-off-by: Janne Savolainen <janne.savolainen@live.fi>

---------

Signed-off-by: Janne Savolainen <janne.savolainen@live.fi>

packages/infrastructure/jest/package.json

@@ -15,9 +15,6 @@
   },
   "license": "MIT",
   "homepage": "https://github.com/lensapp/lens",
-  "bin": {
-    "lens-test": "bin/test.sh"
-  },
   "dependencies": {
     "@swc/core": "^1.3.20",
     "@swc/jest": "^0.2.23",