Add helper function to print the slide layouts

Fix wrong placeholder index in table slides

Add test case for slide template ID revision

Enable model & API key update in SlideDeckAI

Fix image search test case when API key is missing

Skip image search when Pexels API key is not set; add new test cases

Add support for new LLMs and update tests

feat(tests): Increase test coverage of pptx_helper.py to 90%

Update tests for icon embeddings

Add tests for icon embeddings

Update test case (URL substring sanitization)

Add test cases for the other modules

Increase the test coverage of LLM helper

Fix reset test case

Patch tokenizer in the unit tests

Increase test coverage of the SlideDeckAI class

Add unit tests for the SlideDeckAI class

Remove stray print from the test case

Add more unit tests to increase the coverage of the CLI module

Add unit tests for CLI