Draft: Add DocumentLoader plugins.

Nick Oprisrequested to merge
issue/ai_file_to_text-3573054:1.0.x into 1.0.x

Adds plugins implementing the DocumentLoader class. The plugins added have been grouped as follows:

  • word
  • spreadsheet
  • csv, text, markdown

Outstanding work:

  • Add Tools for each of these plugins. (using the Tool api)
  • Review old work and eventually implement it into these plugins.
  • Add tests.
  • Cleanup (remove FunctionCalls, review/update Automator)

Merge request reports