Contributor guidelines

[mrubens]

Context

Several people have asked for guidance on contributing to Roo Code. This is a first version heavily based on Cline - thank you!

---

Important

Adds CODE_OF_CONDUCT.md and CONTRIBUTING.md to guide contributors and updates README to reference these documents.

• New Files:
  • Adds CODE_OF_CONDUCT.md with guidelines for acceptable behavior and enforcement policies.
  • Adds CONTRIBUTING.md with detailed instructions for contributing, including setup, code quality, and testing.
• README Changes:
  • Updates contribution section to reference CONTRIBUTING.md instead of listing steps directly.

^{This description was created by for b1615a3. It will automatically update as commits are pushed.}

[changeset-bot]

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Latest commit: 2749943

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[ellipsis-dev]

Typographical error: In the installation command, it says 'roo-cline' instead of what appears to be the intended 'roo-code'. This could confuse users when installing the extension.

Suggested change

	code --install-extension bin/roo-cline-<version>.vsix
	code --install-extension bin/roo-code-<version>.vsix

[cte]

Pressing F5 does this automatically - might want to skip this step.

[mrubens]

Good call, thanks