Add images to mock data generation script #45

[joelvdavies]

Description

This PR adds faker-file and uses it to

• Expand the generated attachments to include pdf and docx files in addition to the existing txt files with equal probability
• Add randomly generated png and jpeg images

Also changes the script so that it doesn't clear the existing data unless using the --clear/-c option, adds a --entity/-e option for generating images and attachments for specific entity IDs and --num-attachments/-na & --num_images/-ni to generate a specific number of attachments/images for each entity.

Testing instructions

Add a set up instructions describing how the reviewer should test the code

• Review code
• Check Actions build
• Review changes to test coverage

Agile board tracking

Closes #45

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.70%. Comparing base (e86410e) to head (2f88f74).

Additional details and impacted files

@@                          Coverage Diff                          @@
##           add-attachment-generation-script-#14      #47   +/-   ##
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  Coverage                                 98.70%   98.70%           
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  Files                                        19       19           
  Lines                                       310      310           
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  Hits                                        306      306           
  Misses                                        4        4           

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