[DOCs] Added render_3d and step sub-PCB examples.

tests/yaml_samples/render_3d_sub_pcb_bp.kibot.yaml

@@ -0,0 +1,35 @@
+# Example KiBot config file
+kibot:
+  version: 1
+
+import:
+  - file: battery_pack_sub_pcbs.kibot.yaml
+
+outputs:
+  - name: "base"
+    type: render_3d
+    run_by_default: false
+    options:
+      width: 2000
+      height: 1000
+
+  - name: "base2"
+    type: step
+    run_by_default: false
+    options:
+      metric_units: false
+
+  - name: "top"
+    type: render_3d
+    extends: "base"
+    options:
+      rotate_x: 3
+      rotate_z: -2
+
+  - name: "bottom"
+    type: render_3d
+    extends: "top"
+    run_by_default: false
+    options:
+      width: 1920
+      view: "bottom"

tests/yaml_samples/step_sub_pcb_bp.kibot.yaml

@@ -0,0 +1,17 @@
+kiplot:
+  version: 1
+
+import:
+  - file: battery_pack_sub_pcbs.kibot.yaml
+
+outputs:
+  - name: Step
+    comment: "Generate 3D model (STEP)"
+    type: step
+    dir: 3D
+    options:
+      metric_units: true
+      origin: drill        # "grid" or "drill" o "X,Y" i.e. 3.2,-10
+      # no_virtual: false  # exclude 3D models for components with 'virtual' attribute
+      # min_distance: 0.01 # Minimum distance between points to treat them as separate ones (default 0.01 mm)
+      # output: project.step