Add information about the CODECHECK and the corresponding metadata to the "Publication: Metadata" page

To make sure that editors and copyeditors are aware of the metadata implications of the CODECHECK, so they can ensure consistency and correctness.

The page should describe which metadata is collected (preview codecheck.yml?) and where it is deposited (depends on settings, e.g., Wikidata, CODECHECK Register, ORCID profiles, ...).

Mock-up (incomplete information):

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## Related User Stories

- **E-PM1** (direct): As an editor, I want to see and edit CODECHECK metadata in Publication > Metadata tab...
- A-CD1 (related): As an author, I want the CODECHECK certificate and badge to be displayed on my article's landing page...
- C-WB1 (related): As a codechecker, I want a single workbench page in OJS...
- R-SC1 (related): As a reader, I want to see a CODECHECK summary, the certificate ID, and links...
- R-SC2 (related): As a reader, I want a direct link from the article's landing page to the CODECHECK certificate's own landing page...
- R-SC3 (related): As a reader, I want the article's landing page to provide structured, direct links to the verified code repository...
- P-IM1 (related): As a journal manager, I want to enter, edit, and view CODECHECK metadata entirely within the OJS editorial workflow...
- P-SD2 (related): As a publisher, I want CODECHECK metadata to be included in my journal's Crossref and DataCite deposits...
- E-SO1 (related): As a handling editor, I want to see the CODECHECK status, the discussion thread...
- E-DS1 (related): As a chief editor, I want the CODECHECK result to be displayed alongside the peer-review outcome...
- Y-PV1 (related): As a copyeditor, I want to validate the CODECHECK metadata for completeness...

_User story references from the [CHECK-PUB User Stories document](https://codecheck.org.uk/pub/)._