MVC1: Net new Vale rules for common translation formatting issues

Create translation-specific Vale rules to automatically catch common formatting issues in localized content, starting with rules that detect:

• Missing spaces after colons (already prototyped):
  • Good: - keyword: The definition
  • Bad: - keyword:The definition
  • ❌ Unfortunately, after extensive testing in two MRs (ex: gitlab-org/gitlab!203799 (merged), there are too many edge cases to have this as a Vale rule)
• Incorrect quotation marks for target languages:
  • Good: Japanese quotes「here」.
  • Bad: English quotes "here".
• English punctuation in non-English text:
  • Good: Japanese parentheses（here）.
  • Bad: English parentheses (here).
• Header ID format:
  • Good: ### Translated header {source-header-id}
  • Bad:
    • ### Translated header{source-header-id}
    • ### Translated header {source-header-id}
    • ### Translated {source-header-id} header

This will reduce manual review effort and ensure consistent formatting across all translated documentation.

Context: https://gitlab.com/gitlab-com/localization/tech-docs-forked-projects/prod/gitlab/-/merge_requests/107#note_2617251526