Update 1 for LIRA-FEM 2024 R1

Import/export of *.ifc file, beams, inclined slab, steel structures, LIRA-CAD (Generator), grid lines, import of *.dwg file, Rhino (Grasshopper), capitals, model scale, design parameters of the steel structures, option to unite slabs, generation of perfectly rigid body (PRB), parameters of analytical model, triangulation points and lines, pile properties, option to copy objects, space, partitions, ice load, solids, SOIL system, export of the *.sli file, pile calculation, option to edit stiffness, METEOR system, nonlinear stress-strain diagrams, super-elements, box section, check of deflections, DCL and other improvements.