DVE: Handle asn1 from HW library

• When loading the HW library, check if the ASN.1 types are available in the project. If not, check if the asn file references exists. If that fails as well, raise an error (that show in the error pane of QtC)
• For all boards where the asn1 data is not available (in project or the file), show them in red and add a tooltip explaining the issue
• When adding a new node, check if the asn type exists. If not, copy the referenced file to the project (if available).