Simplify package creation

scripts/create-package

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+set -eo pipefail
+
+name=$1
+
+if [[ -z "$name" ]]; then
+  >&2 echo "Usage: npm run new-package [name]"
+  exit 1
+fi
+
+lerna create @actions/$name
+cp packages/toolkit/tsconfig.json packages/$name/tsconfig.json