landing_gear_design: -Update src code to run nacelle clearance check inside of...

landing_gear_design:

• Update src code to run nacelle clearance check inside of the strut length dimensioning
• Add sub_function directory
• bugFixes for visualization of front view

Code tested with a converged CSMR-file for shifted nacelle position and nacelle position given from estimation -> both cases running like expected -> landing gear strut lengths will resized in each case -> nacelle ground clearance nacelle ground clearance is observed in each case

landing_gear_design/src/wing_mounted/empirical/landing_gear_design_tu_berlin/general/aicraft_classification_number/flexible_pavement/acnflexcomp.py

+# UNICADO - UNIversity Conceptual Aircraft Design and Optimization
+#
+# Copyright (C) 2024 UNICADO consortium
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+#
+# Description:
+# This file is part of UNICADO.
+
 # Import standard modules.
 import math