Add Urdu translation of Contributor Covenant version 3.0

[Mohammadwasifbalti]

This pull request introduces a new Urdu translation of the Contributor Covenant Code of Conduct (version 3.0) and updates the repository structure and configuration to support it. The key changes include adding the Urdu language entry to hugo.toml, creating the translation file, and updating the instructions in README.md to reflect the new file structure.

Translation Addition:
Added a new Udu translation of the Contributor Covenant Code of Conduct (version 3.0) in content/version/3/0/code_of_conduct.ur.md. This includes the full text of the code of conduct, enforcement guidelines, and attribution.
Repository and Configuration Updates:
Updated hugo.toml to include Urdu (ur) as a supported language with its localized name and language code.

[Mohammadwasifbalti]

Thank you for bringing this to my attention. I have reviewed the Hippocratic License 3.0 and confirm that my contribution complies with all the ethical standards outlined in the license. I accept these terms for my pull request.

[klaude]

Thank you for bringing this to my attention. I have reviewed the Hippocratic License 3.0 and confirm that my contribution complies with all the ethical standards outlined in the license. I accept these terms for my pull request.

Hi, @Mohammadwasifbalti . That was bot spam. Never mind them, though I'm glad that we're all HL3 compliant. :) Thanks for the contributions!