💡 [Feature]: for the love of god let's start writing tests

[Adam-it]

🎯 Aim of the feature

It's kinda embarrassing but yes we do not have unit tests as of now.
What initially started as a small VS Code extension oriented around ACEs and Viva Connections turned to this massive extension that extensively enhances VS Code with lot of SPFx development features, now even extends GitHub Copilot.
As we grow and grow we need to make sure we increase the quality and maintainability of our work. As first step we need to add unit tests.
The aim of this issue is to prototype this and kick of with a small portion of unit tests for a single provider or service.

📷 Images (if possible) with expected result

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🤔 Additional remarks or comments

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