Make it possible to build on windows using powershell

Signed-off-by: Sebastian Malton <sebastian@malton.name>

packages/extension-api/package.json

@@ -35,6 +35,7 @@
     "@types/webpack-node-externals": "2.5.3",
     "css-loader": "^6.7.2",
     "node-loader": "^2.0.0",
+    "rimraf": "^4.1.2",
     "style-loader": "^3.3.1",
     "ts-loader": "^9.4.2",
     "ts-node": "^10.9.1",

packages/extension-api/yarn.lock

@@ -1341,6 +1341,11 @@ resolve@^1.20.0:
     path-parse "^1.0.7"
     supports-preserve-symlinks-flag "^1.0.0"
 
+rimraf@^4.1.2:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-4.1.2.tgz#20dfbc98083bdfaa28b01183162885ef213dbf7c"
+  integrity sha512-BlIbgFryTbw3Dz6hyoWFhKk+unCcHMSkZGrTFVAx2WmttdBSonsdtRlwiuTbDqTKr+UlXIUqJVS4QT5tUzGENQ==
+
 safe-buffer@^5.1.0:
   version "5.2.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.1.tgz#1eaf9fa9bdb1fdd4ec75f58f9cdb4e6b7827eec6"