Fix Robot API existence checks, FramingElementDesignProperties implementation, and add comprehensive lateral torsional buckling and service limit state support#562

Chrisshort92 with Copilot wants to merge 14 commits into

Robot_Toolkit-#333-rename-framingelementdesignpropertiesBHoM/Robot_Toolkit:Robot_Toolkit-#333-rename-framingelementdesignpropertiesfrom

copilot/fix-f0caa4f8-f99e-4d9f-abbd-dd3cc4f78dfdBHoM/Robot_Toolkit:copilot/fix-f0caa4f8-f99e-4d9f-abbd-dd3cc4f78dfdCopy head branch name to clipboard