code2prompt, yek: add page

[radheshpai87]

Checklist

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.

  • Files added: pages/common/code2prompt.md, pages/common/yek.md (both in common).

• The page description(s) have links to documentation or a homepage.

  • code2prompt links: https://code2prompt.dev/ and https://github.com/mufeedvh/code2prompt
  • yek links: https://github.com/bodo-run/yek

• The page(s) follow the content guidelines.

  • Short usage examples, placeholders in {{ }}, and concise descriptions were used to match tldr page conventions.

• The page(s) follow the style guide.

  • Examples are short, show common flags and outputs, and include links to upstream docs.

• The PR contains at most 5 new pages.

  • This PR adds 2 pages.

• The PR is authored by me, or has been human-reviewed if it was created with AI or machine translation software.

  • These pages were generated with assistance and reviewed for style and correctness; please verify the examples and wording before merging.

• The PR title conforms to the recommended templates.

  • Commit/branch uses: docs: add Code2Prompt and Yek tldr pages (repomapper tools) — adjust to the project's preferred template if needed.

• Version of the command being documented (if known):

  • code2prompt — release v4.0.2 (latest tag at time of writing)
  • yek — release v0.25.0 (latest tag at time of writing)

Reference issue: #19272

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