chore: Added DCO.

.github/dco.yml

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+allowRemediationCommits:
+  individual: true
+  thirdParty: true
+require:
+  members: false

CONTRIBUTING.md

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+# Contributing to Platformatic Kafka
+
+Welcome to the Platformatic Kafka development guide! This document will help you set up your development environment and contribute to the project.
+
+## Project Overview
+
+Platformatic is an open-source, modern, high-performance, pure TypeScript/JavaScript type safe client for Apache Kafka.
+
+## Prerequisites
+
+- **Node.js**: Version 20.19.4, 22.18.0 or 24.6.0 or higher
+- **pnpm**: Package manager (follow the [pnpm installation guide](https://pnpm.io/installation))
+- **Docker** (optional): Only required for running tests locally.
+
+## Getting Started
+
+### 1. Clone and Setup
+
+```bash
+git clone https://github.com/platformatic/kafka.git
+cd kafka
+```
+
+### 2. Install Dependencies
+
+```bash
+pnpm install
+```
+
+### 4. Setup Docker Environment (Optional)
+
+This step is only required if you plan to run tests locally.
+
+```bash
+docker compose up -d
+```
+
+## Development Workflow
+
+### Essential Commands
+
+```bash
+# Development workflow
+pnpm test              # Run all tests
+pnpm run build         # Build the package
+pnpm run lint          # Lint the package
+```
+
+### Testing
+
+Tests require Docker for Kafka cluster setup.
+
+```
+docker compose up -d
+```
+
+You can eventually provide a `KAFKA_VERSION` environment variable to select a specific version of Kafka.
+Note that the images use Confluent Kafka so you need to add 4 to your desider version. For instance, to run on Kafka 3.9.0:
+
+```
+bash
+KAFKA_VERSION=7.9.0 docker compose up -d
+```
+
+Then you run the test normally:
+
+```bash
+pnpm test
+```
+
+## Pull Request Process
+
+### Before Submitting
+
+1. Ensure all tests pass: `pnpm test`
+2. Run linting: `pnpm run lint`
+3. Build all packages: `pnpm run build`
+
+### Creating a Pull Request
+
+1. If your PR fixes a GitHub issue, add this at the top of the PR description:
+
+```
+Fixes #<issue-number>.
+```
+
+2. Ensure all checks pass and get approval
+3. Merge using "squash and merge" option
+
+## Developer Certificate of Origin
+
+All contributions must include a Developer Certificate of Origin (DCO) sign-off. Use the `-s` flag when committing:
+
+```bash
+git commit -s -m "Your commit message"
+```
+
+This automatically adds your `Signed-off-by` line to the commit message. If working with AI assistance, ensure both contributors are signed off.
+
+```
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+1 Letterman Drive
+Suite D4700
+San Francisco, CA, 94129
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+    of my knowledge, is covered under an appropriate open source
+    license and I have the right under that license to submit that
+    work with modifications, whether created in whole or in part
+    by me, under the same open source license (unless I am
+    permitted to submit under a different license), as indicated
+    in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including all
+    personal information I submit with it, including my sign-off) is
+    maintained indefinitely and may be redistributed consistent with
+    this project or the open source license(s) involved.
+```
+
+If you want to know how to retroactively add the DCO to your commits,
+check out [this guide](https://github.com/src-d/guide/blob/master/developer-community/fix-DCO.md).
+
+## Getting Help
+
+- Check the [documentation](https://docs.platformatic.dev/)
+- Join our [Discord community](https://discord.gg/platformatic) for real-time help and discussions
+- Open an issue on GitHub
+
+Thank you for contributing to Platformatic Kafka! 🚀

dco.txt

@@ -0,0 +1,37 @@
+Developer Certificate of Origin
+Version 1.1
+
+Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
+1 Letterman Drive
+Suite D4700
+San Francisco, CA, 94129
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+
+Developer's Certificate of Origin 1.1
+
+By making a contribution to this project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the open source license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the best
+    of my knowledge, is covered under an appropriate open source
+    license and I have the right under that license to submit that
+    work with modifications, whether created in whole or in part
+    by me, under the same open source license (unless I am
+    permitted to submit under a different license), as indicated
+    in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including all
+    personal information I submit with it, including my sign-off) is
+    maintained indefinitely and may be redistributed consistent with
+    this project or the open source license(s) involved.