doc: add 3D printing programs

modules/programs.nix

@@ -26,6 +26,28 @@
         else jetbrains.idea-community
       )
 
+      #
+      # 3D modeling and printing
+      #
+
+      # Can import .stl files: https://docs.blender.org/manual/en/latest/files/import_export/stl.html
+      #blender
+      # Optional HIP support increases the closure size significantly (https://github.com/NixOS/nixpkgs/blob/34bdaaf1f0b7fb6d9091472edc968ff10a8c2857/pkgs/applications/misc/blender/default.nix#L9).
+      # Blender HIP rendering: https://docs.blender.org/manual/en/latest/render/cycles/gpu_rendering.html#hip-amd
+      #blender-hip
+
+      # General purpose Open Source 3D CAD/MCAD/CAx/CAE/PLM modeler.
+      # Can import .stl files.
+      #freecad
+      # 3D parametric model compiler.
+      # Can import .stl files with: import("example.stl");
+      #openscad
+
+      # G-code generator for 3D printers.
+      # Multiple G-code flavors supported (RepRap, Makerbot, Mach3, Machinekit, etc.)
+      # SuperSlicer is a PrusaSlicer fork (which is a slic3r fork) (previously Slic3r++).
+      #super-slicer
+
       #
       # OFFICE
       #