Generate Typescript Docs for @actions/artifact (#1595)

* autogenerate artifact documentation

* clean up comments for better autogen docs

package.json

@@ -33,7 +33,8 @@
     "test": "cd ../../ && npm run test ./packages/artifact",
     "bootstrap": "cd ../../ && npm run bootstrap",
     "tsc-run": "tsc",
-    "tsc": "npm run bootstrap && npm run tsc-run"
+    "tsc": "npm run bootstrap && npm run tsc-run",
+    "gen:docs": "typedoc --plugin typedoc-plugin-markdown --out docs/generated src/artifact.ts --githubPages false --readme none"
   },
   "bugs": {
     "url": "https://github.com/actions/toolkit/issues"
@@ -57,6 +58,8 @@
   },
   "devDependencies": {
     "@types/archiver": "^5.3.2",
+    "typedoc": "^0.25.4",
+    "typedoc-plugin-markdown": "^3.17.1",
     "typescript": "^5.2.2"
   }
 }