Delete cnc-config/linuxcnc/config_placeholder

Create placeholder

First issue

Create config_placeholder

Delete hardware/bom/bom_placeholder

Rename bom/openatc_bom.md to hardware/bom/openatc_bom.md

Update README.md

Update README.md

Create openatc_bom.md

Update README.md

First issue

Delete hardware/cad/cad_placeholder

First issue

Create bom_placeholder

Create pleaseholder_for_step_files