QGIS Quick WKT plugin iface edition

After a long time without updates, I’ve added a couple of utilities methods to the plugin and made them available to iface.

Some plugin core functions can now be called from a Python console:
g = QgsGeometry.fromWkt('POINT (9.9 43)')
iface.show_geometry(g.buffer(0.2, 2))
iface.show_wkt('POINT (9 45)')
iface.show_wkb(r'0103...') # cut
All functions accept a layer title as optional argument, if None is given, they are automatically added to a Quick WKT GeometryType (memory) layer, such as Quick WKT Polygon for polygons.