fix: fix execute permission not applied to hooks on linux machines

[donalfenwick]

During an install on a linux system a chmod +x command needs to be applied to each hook by the SetExecutablePermission method.
The call to Directory.GetFiles(path).Where(f => !f.Contains(".")) was ignoring any hooks in the husky dir as it was getting the full path and file name for each file. The full path included a dot in the parent folder name /.husky causing the file to be skipped. This change inspects only the file name to ensure the hooks are included in the call to SetExecutablePermission.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

[alirezanet]

Thanks! 👌