Add Mocked Tests: Image Actions

[danaelhe]

Overview
Add more test coverage for Pydo, specifically for Image Actions

Mocked Tests: tests/mocked/
Tests in the mocked directory include:

• Tests that validate the generated client has all the expected classes and methods for the respective API resources and operations.
• Tests that exercise individual operations against mocked responses.

These tests do not act against the real API so no real resources are created.

To run mocked tests, run:

make test-mocked

Instructions

1. Clone this repo.
2. If you haven't already, install Python (version: >= 3.7.2) through their official installer.
3. CD into the directory and run make install
4. Create file: tests/mocked/test_image_actions.py
5. Add tests for image_actions.get, image_actions.list, image_actions.post
6. API documentation is here
7. Pydo Documentation is here

[dhananjay0610]

started working on this