vpype dxf loading plugin

Adds command dread (dxf-read) that reads dxf files and into the vpype pipeline.

See: https://github.com/abey79/vpype for vpype.

Ezdxf is used as the backend of this project. The -Q/--query feed directly into the query field of the ezdxf query(), and the -g/--groupby option is directly in the groupby value. This will allow you to use any valid ezdxf properties to groupby. The defaults are * for query and color for groupby.

• vpype <file> dread --groupby lineweight write lines.svg -- This would load the file and group the layers such that each lineweight in the dxf document is a different grouped according to their lineweight.

• vpype dread -Q 'LINE CIRCLE[color==1]' 3colors.dxf write lines-circ.svg -- This finds and processes only the LINE and CIRCLE objects where color==1 and writes those to the given file.

• vpype dread -g lineweight file.dxf show --colorful -- Will group by the lineweight and show colorful layer groupings of those groups. This can work wonders for visualizing a messy file.

• vpype dread --groupby center circles.dxf stat -- Will group objects by the center of their circles.

See the ezdxf documentation on query for advanced help.

https://ezdxf.readthedocs.io/en/stable/query.html

• ezdxf author mozman did all the heavy lifting of parsing the dxf files.
• abruto's research and suggestions in issue #5 lead to rather large increase in functionality.