Ignores files starting with dot and residing in directory when posting PR

[simonbs]

This PR adjusts the logic for the files included in PR comments. The logic is as follows:

• YAML files with the .yml or .yaml extension are included.
• YAML files are required to reside in the root of the repository.
• YAML files starting with a dot (.) are ignored.
• Only exception to the above rule is the project configuration file which is allowed to start with a dot, e.g. .shape-docs.yml

[ulrikandersen]

🥇 for the unit tests