Import alignment from csv (#6234)

* Start of the official alignment API

* Import alignment into bonsai model using CSV file

src/ifcopenshell-python/ifcopenshell/api/alignment/remove_zero_length_segment.py

@@ -0,0 +1,35 @@
+# IfcOpenShell - IFC toolkit and geometry engine
+# Copyright (C) 2025 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 ifcopenshell
+import ifcopenshell.api.alignment
+from ifcopenshell import entity_instance
+import ifcopenshell.api.alignment.remove_last_segment
+
+
+def remove_zero_length_segment(file: ifcopenshell.file, entity: entity_instance) -> entity_instance:
+    """
+    Removes the zero length segment from the end of entity.
+
+    :param entity: An IfcAlignmentHorizontal, IfcAlignmentVertical, IfcAlignmentCant or IfcCompositeCurve
+    :return: The zero length segment
+    """
+    if not ifcopenshell.api.alignment.has_zero_length_segment(entity):
+        return None
+
+    return ifcopenshell.api.alignment.remove_last_segment(file, entity)