added readme to the open-source-stack

Author: AlemTuzlak

packages/open-source-stack/README.md

@@ -0,0 +1,6 @@
+# Open-source stack
+
+This is a placeholder npm package for the open-source-stack by Forge 42.
+It is a full starter stack to develop CJS/ESM compatible npm packages with TypeScript, Vitest, Biome and GitHub Actions.
+Find the template here:
+https://github.com/forge-42/open-source-stack