chore: added CONTRIBUTING.md file

Author: pd93

.github/CONTRIBUTING.md

@@ -0,0 +1,14 @@
+## You can find our [contribution guide on our website][contributing]
+
+- Please read it carefully before opening a PR.
+- If you have any questions, you can:
+  - [Open an issue][issues]
+  - [Create a discussion][discussions]
+  - [Chat to us on Discord][discord]
+
+<!-- prettier-ignore-start -->
+[contributing]: https://taskfile.dev/contributing
+[issues]: https://github.com/go-task/vscode-task/issues
+[discussions]: https://github.com/go-task/vscode-task/discussions
+[discord]: https://discord.gg/6TY36E39UK
+<!-- prettier-ignore-end -->