Today I worked on the insert entity rendering.
I removed the rendering of the entities which are part of a block, and added the rendering of insert.
For each entity of the block, it does: draw(entity->move(block->base() - insert))
That should be optimizable, but for the moment the performance is good.

I also added the builder for Point and Insert, and use it in DXFimpl, with the corresponding unit tests.

I just need to find a way to get a block by its name during DXF load when adding an insert entity. I'll probably create a temporary map