docs: add 11 new script pages and update index pages and sidebar
New pages: BOM-Export-To-CSV, Batch-Instance-Name-Equal-Part-Number,
Export-Assembly-As-STEP, Scale-Keep-Name, Scale-Keep-Name-And-Structure,
Export-Mass-CoG-Inertia-To-CSV, Create-Construction-Planes,
Delete-Deactivated-Features, Export-Curve-Lengths-Surface-Areas-To-CSV,
Spline-Through-Points-In-Geometric-Set, Batch-CATDrawing-To-PDF
Updated: Part-Document-Scripts, Product-Document-Scripts,
Any-Document-Scripts, _Sidebar
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>