Rename artifacts destination folder to not start with dot

[gilgardosh]

Is your feature request related to a problem? Please describe.

The current name of the generated folder creates issues, since .something folders are ignored by some external tools.

Describe the solution you'd like

Better naming would be "mesh-artifacts"
Event better solution will be customizable name, or even path, to the artifacts filder

Describe alternatives you've considered

Adding post-generation code to rename or relocate the folder results in some errors, since some import paths in the generated code uses the hard-coded original path