i’d be also interested in this because i generate my .svg files programmatically but i’m afraid there is no way to import vector graphics perfectly to Shapr3D at the moment. the only - very limited - solution is to convert your files to .dxf but that also converts all the curves to small straight lines so the quality is not the same.
i checked your .dxf file and importing it results in an error but after running it through a randomly selected online tool (google: fix dxf file) i could import it (in this ugly way :D):
btw here are some threads where people already discussed this topic: