docs: update README with documentation links and TODOs for GitHub Actions

README.md

@@ -1,3 +1,14 @@
 # actions
 
 List of reusable github actions for @the-nexim
+
+## Docs
+
+- <https://docs.github.com/en/actions/sharing-automations/reusing-workflows>
+- <https://docs.github.com/en/actions/sharing-automations/creating-actions/creating-a-composite-action>
+- <https://docs.github.com/en/actions/sharing-automations/creating-actions/metadata-syntax-for-github-actions>
+
+## TODO
+
+- <https://docs.github.com/en/actions/security-for-github-actions/security-guides/security-hardening-for-github-actions>
+-