add typing-extensions to ifcopenshell explicit dependencies

typing-extensions is official python package for supporting typing features on older versions.

It was kind of included in both blenderbim and to ifcopenshell as typing-extensions is also numpy dependency, included it explicitly just in case.

src/blenderbim/Makefile

@@ -171,6 +171,8 @@ endif
 	mkdir dist/working
 	cd dist/working && $(PYTHON) -m venv env
 	cd dist/working && mkdir site-packages
+	# IfcOpenShell dependency - support for new typing features
+	cd dist/working && . env/bin/activate && $(PIP) install typing_extensions --target=./site-packages
 	# Required by IfcCSV
 	cd dist/working && . env/bin/activate && $(PIP) install pandas $(PYPI_PLATFORM) --python-version $(PYPI_VERSION) --implementation $(PYPI_IMP) --only-binary=:all: --target=./site-packages
 	# Pandas ships with very heavy tests

src/ifcopenshell-python/pyproject.toml

@@ -15,7 +15,14 @@ classifiers = [
     "Programming Language :: Python :: 3",
     "License :: OSI Approved :: GNU Lesser General Public License v3 or later (LGPLv3+)",
 ]
-dependencies = ["shapely", "numpy", "isodate", "python-dateutil", "lark"]
+dependencies = [
+    "shapely",
+    "numpy",
+    "isodate",
+    "python-dateutil",
+    "lark",
+    "typing-extensions",
+]
 
 [project.optional-dependencies]
 geometry = ["mathutils"]