fix many implicit ifcopenshell.guid imports

a bit related to 10d30b0de

src/ifcopenshell-python/test/api/geometry/test_edit_object_placement.py

@@ -20,6 +20,7 @@ import numpy
 import pytest
 import test.bootstrap
 import ifcopenshell.api
+import ifcopenshell.guid
 import ifcopenshell.util.placement
 
 

src/ifcopenshell-python/test/api/owner/test_remove_organisation.py

@@ -18,6 +18,7 @@
 
 import test.bootstrap
 import ifcopenshell.api
+import ifcopenshell.guid
 
 
 class TestRemoveOrganisation(test.bootstrap.IFC4):

src/ifcopenshell-python/test/api/owner/test_remove_person.py

@@ -18,6 +18,7 @@
 
 import test.bootstrap
 import ifcopenshell.api
+import ifcopenshell.guid
 
 
 class TestRemovePerson(test.bootstrap.IFC4):

src/ifcopenshell-python/test/api/owner/test_remove_person_and_organisation.py

@@ -18,6 +18,7 @@
 
 import test.bootstrap
 import ifcopenshell.api
+import ifcopenshell.guid
 
 
 class TestRemovePersonAndOrganisation(test.bootstrap.IFC4):

src/ifcopenshell-python/test/api/pset/test_edit_pset.py

@@ -19,6 +19,7 @@
 import operator
 import test.bootstrap
 import ifcopenshell.api
+import ifcopenshell.guid
 
 
 class TestEditPset(test.bootstrap.IFC4):

src/ifcopenshell-python/test/api/root/test_remove_product.py

@@ -18,6 +18,7 @@
 
 import test.bootstrap
 import ifcopenshell.api
+import ifcopenshell.guid
 
 
 class TestRemoveProduct(test.bootstrap.IFC4):

src/ifcopenshell-python/test/file_gc.py

@@ -3,6 +3,7 @@ import pytest
 import weakref
 import itertools
 import ifcopenshell
+import ifcopenshell.guid
 import ifcopenshell.api
 import ifcopenshell.template
 

src/ifcopenshell-python/test/global_id_updates.py

@@ -1,5 +1,7 @@
 import pytest
 import ifcopenshell
+import ifcopenshell.guid
+
 
 def test_global_id_updates():
     g1, g2, g3 = (ifcopenshell.guid.new() for i in range(3))

src/ifcopenshell-python/test/instance_string_formatting.py

@@ -1,5 +1,6 @@
 import pytest
 import ifcopenshell
+import ifcopenshell.guid
 
 def test_file_gc():
     f = ifcopenshell.file()

src/ifcopenshell-python/test/test_wall_opening.py

@@ -28,6 +28,7 @@ from dataclasses import dataclass, field
 
 import pytest
 import ifcopenshell
+import ifcopenshell.guid
 import ifcopenshell.template
 
 PERF = False

src/ifcopenshell-python/test/util/test_element.py

@@ -19,6 +19,7 @@
 import pytest
 import test.bootstrap
 import ifcopenshell.api
+import ifcopenshell.guid
 import ifcopenshell.util.element as subject