bimstester: features, move spatial structure tests from examples to implemented steps

src/ifcbimtester/examples/steps/spatial_structure.py

@@ -1,10 +0,0 @@
-from behave import step
-
-from utils import IfcFile
-
-
-@step("all buildings have an address")
-def step_impl(context):
-    for building in IfcFile.get().by_type("IfcBuilding"):
-        if not building.BuildingAddress:
-            assert False, f'The building "{building.Name}" has no address.'