DXF: add the support of AutoCAD Wipeout object

[Jwohnlf]

Feature description

I open this issue with the intention to add an feature enhancement to add the support of WIPEOUT DXF entities. As mentionned in the knonw issue log, this feature is still missing in the DXF driver.

WIPEOUT objects are sometimes used to draw the outline of object. In the screenshot below a annotation box related to a sewer manhole is drawn as a block using such DXF entity.

Another example where a manhole outline is drawn with a Wipeout entity

Additional context

No response