Integrate ifccityjson in BlenderBIM (#1859)

* ifccityjson-BB integration: include CJIO in makefile

* Add ifccityjson to BlenderBIM

* Make ifccityjson work like a package

* Use pip while installing CJIO dependency for ifccityjson

* revert removal of brick module

* Changes from pull request review

* Use ifccityjson as CLI and as package for BlenderBIM

src/ifccityjson/__init__.py

@@ -0,0 +1,23 @@
+
+# ifccityjson - Python CityJSON to IFC converter
+# Copyright (C) 2021 Laurens J.N. Oostwegel <l.oostwegel@gmail.com>
+#
+# This file is part of ifccityjson.
+#
+# ifccityjson 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.
+#
+# ifccityjson 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 ifccityjson.  If not, see <http://www.gnu.org/licenses/>.
+
+from .cityjson2ifc import *
+
+# Export version number
+__version__ = "0.0.1"