For some unknown reason, that was introduced by #12, the main CI workflow fails
when running npx nx format:check job.

Currently, the IdleObserver class is tightly coupled with the NgxChronosTimeline component, which can lead to code complexity and maintenance challenges. This coupling makes it difficult to reuse or extend the IdleObserver class in other parts of the application.

Scope

The goal of this issue is to decouple the IdleObserver class from the NgxChronosTimeline component. This decoupling will involve refactoring the code to ensure that the IdleObserver can operate independently or be easily integrated with other components.

Additionally, the name IdleObserver doesn't fully reflect the responsibility of the service.
Therefore, renaming the service to IdleManager might be more appropriate.

Proposed Solution

1. Identify and isolate the specific dependencies between IdleObserver and NgxChronosTimeline.
2. Refactor the code to remove or abstract these dependencies.
3. Ensure that the IdleObserver class can function as a standalone service or be used with other components in the project.
4. Rename IdleObserver to IdleManager

Expected Outcome

Decoupling the IdleObserver class will lead to cleaner, more maintainable code and increased reusability. It will also facilitate easier testing of the IdleObserver in isolation.

Acceptance Criteria

• The IdleObserver class is decoupled from the NgxChronosTimeline component.
• The IdleObserver class is renamed to IdleManager
• The refactored code does not introduce new bugs or regressions.
• The IdleManager remains fully functional after the decoupling.
• Unit tests are added or updated to ensure the correctness of the IdleManager class.
• Documentation is updated to reflect the changes and decoupling process.

Example

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     .     <= 11/2023 November - most recent month with records
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2023 -     <= 04/2023 April - first month in most recent year with records
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     -     <= 12/2022
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     -     <= 08/2022
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     -     <= 06/2022
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2022 -     <= 02/2022 - first month in 2022 with records
     ... etc