Module machine name and file names

Problem/Motivation

The name of the module is Google Reviews Slider. The machine name on Drupal.org and the project name in the info.yml file is google_reviews_slider. The name of the files in the modules directory is google_reviews, without the _slider part. This does not following naming conventions and could collide with a any future project on drupal.org with the machine name google_reviews.

Steps to reproduce

Nothing to reproduce.

Proposed resolution

Rename files to follow the proper naming convention : google_reviews_slider.* and then adjust hooks and namespaces.

Remaining tasks

- Rename files
- Rename hooks
- Rename namespaces

User interface changes

None

API changes

None

Data model changes

None