feat: Describe pictures using vision models

[dolfim-ibm]

This PR is a work in progress for using vision models to annotate pictures found in documents.

Issue resolved by this Pull Request:
Resolves #192

Checklist:

• Commit Message Formatting: Commit titles and messages follow guidelines in the
  conventional commits.
• Documentation has been updated, if necessary.
• Examples have been added, if necessary.
• Tests have been added, if necessary.

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