add helper to extract .tar.xz

node_modules/@actions/exec/package.json

@@ -1,36 +1,35 @@
 {
-  "_args": [
-    [
-      "@actions/exec@1.0.0",
-      "/Users/subosito/Code/playground/flutter-actions"
-    ]
-  ],
-  "_from": "@actions/exec@1.0.0",
+  "_from": "@actions/exec",
   "_id": "@actions/exec@1.0.0",
   "_inBundle": false,
   "_integrity": "sha512-nquH0+XKng+Ll7rZfCojN7NWSbnGh+ltwUJhzfbLkmOJgxocGX2/yXcZLMyT9fa7+tByEow/NSTrBExNlEj9fw==",
   "_location": "/@actions/exec",
   "_phantomChildren": {},
   "_requested": {
-    "type": "version",
+    "type": "tag",
     "registry": true,
-    "raw": "@actions/exec@1.0.0",
+    "raw": "@actions/exec",
     "name": "@actions/exec",
     "escapedName": "@actions%2fexec",
     "scope": "@actions",
-    "rawSpec": "1.0.0",
+    "rawSpec": "",
     "saveSpec": null,
-    "fetchSpec": "1.0.0"
+    "fetchSpec": "latest"
   },
   "_requiredBy": [
+    "#USER",
+    "/",
     "/@actions/tool-cache"
   ],
   "_resolved": "https://registry.npmjs.org/@actions/exec/-/exec-1.0.0.tgz",
-  "_spec": "1.0.0",
+  "_shasum": "70c8b698c9baa02965c07da5f0b185ca56f0a955",
+  "_spec": "@actions/exec",
   "_where": "/Users/subosito/Code/playground/flutter-actions",
   "bugs": {
     "url": "https://github.com/actions/toolkit/issues"
   },
+  "bundleDependencies": false,
+  "deprecated": false,
   "description": "Actions exec lib",
   "devDependencies": {
     "@actions/io": "^1.0.0"