Fill ifcopenshell_wrapper.pyi with symbols #6684

As described in #6744 partial stub wrapper is completely replacing the type information from the wrapper, so having partial stub is making things worse than they were before.
This commit is adding all available symbols from the wrapper to the stub and allows to gradually include type information to the stub.
It also adds a safe net to ensure stub and wrapper won't go out of sync.

src/ifcopenshell-python/test/util/scripts/test_validate_stub.py

@@ -0,0 +1,25 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2021 Thomas Krijnen <thomas@aecgeeks.com>
+#
+# This file is part of IfcOpenShell.
+#
+# IfcOpenShell is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# IfcOpenShell is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with IfcOpenShell.  If not, see <http://www.gnu.org/licenses/>.
+
+import pytest
+import ifcopenshell.util.scripts.validate_stub as subject
+
+
+class TestValidateStub:
+    def test_run(self):
+        subject.main()