- deletes all placeholder files / sections
- adds LCA description
- restructures software architecture

- Add design and analysis tools: initial_sizing, create_mission_xml, fuselage_design, wing_design, empennage_design, tank_design, propulsion_design, landing_gear_design, aerodynamic_analyis, systems_design, mission_analysis, weight_and_balance_analysis
- Add assessment tools: cost_estimation, ecological_assessment, performance_assessment
- Add CMakeLists.txt, CMakePresets, LICENCE, README, .gitattribute, ,gitignore, ,gitmodules, pipeline for documentation upload on website, Pipfile, Pipfile.lock