Tests: add PointCloud datablock to IO report

Adds support for comparing PointCloud datablocks inside the IO report.

Pull Request: https://projects.blender.org/blender/blender/pulls/147490

tests/files/usd/compare/reference/unused_pointinstancer_crash.txt

@@ -68,6 +68,19 @@
     - (1.000, 1.000)
     - (0.000, 1.000)
 
+==== Point Clouds: 1
+- PointCloud 'point_instancer' points:1
+  - attr 'mask' BOOLEAN POINT
+    - 1 
+  - attr 'orientation' QUATERNION POINT
+    - (0.929, 0.301, 0.205, -0.066)
+  - attr 'position' FLOAT_VECTOR POINT
+    - (0.000, 0.000, 0.000)
+  - attr 'proto_index' INT POINT
+    - 0 
+  - attr 'scale' FLOAT_VECTOR POINT
+    - (1.000, 1.000, 1.000)
+
 ==== Objects: 6
 - Obj 'A' MESH data:'A'
   - pos 0.000, 0.000, 0.000

tests/files/usd/compare/reference/unused_prototypes_crash_139162.txt

@@ -13,6 +13,22 @@
   - attr 'sharp_face' BOOLEAN FACE
     - 1 1 1 1 1 1 
 
+==== Point Clouds: 1
+- PointCloud 'MainInstancer' points:2
+  - attr 'mask' BOOLEAN POINT
+    - 1 1 
+  - attr 'orientation' QUATERNION POINT
+    - (1.000, 0.000, 0.000, 0.000)
+    - (1.000, 0.000, 0.000, 0.000)
+  - attr 'position' FLOAT_VECTOR POINT
+    - (2.000, 0.000, 0.000)
+    - (-2.000, 0.000, 0.000)
+  - attr 'proto_index' INT POINT
+    - 0 0 
+  - attr 'scale' FLOAT_VECTOR POINT
+    - (1.000, 1.000, 1.000)
+    - (1.000, 1.000, 1.000)
+
 ==== Objects: 2
 - Obj 'MainInstancer' POINTCLOUD data:'MainInstancer'
   - pos 0.000, 0.000, 0.000

tests/python/modules/io_report.py

@@ -266,6 +266,8 @@ integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw
             return f"({fmtf(val.vector[0])}, {fmtf(val.vector[1])})"
         if isinstance(val, bpy.types.FloatColorAttributeValue) or isinstance(val, bpy.types.ByteColorAttributeValue):
             return f"({val.color[0]:.3f}, {val.color[1]:.3f}, {val.color[2]:.3f}, {val.color[3]:.3f})"
+        if isinstance(val, bpy.types.QuaternionAttributeValue):
+            return f"({val.value[0]:.3f}, {val.value[1]:.3f}, {val.value[2]:.3f}, {val.value[3]:.3f})"
         if isinstance(val, bpy.types.Int2AttributeValue) or isinstance(val, bpy.types.Short2AttributeValue):
             return f"({val.value[0]}, {val.value[1]})"
         if isinstance(val, bpy.types.ID):
@@ -529,6 +531,27 @@ integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw
                 Report._write_custom_props(curve, desc)
                 desc.write(f"\n")
 
+        # pointclouds
+        if len(bpy.data.pointclouds):
+            desc.write(f"==== Point Clouds: {len(bpy.data.pointclouds)}\n")
+            for pointcloud in bpy.data.pointclouds:
+                # overview
+                desc.write(
+                    f"- PointCloud '{pointcloud.name}' "
+                    f"points:{len(pointcloud.points)}\n"
+                )
+                # attributes
+                for attr in sorted(pointcloud.attributes, key=lambda x: x.name):
+                    if not attr.is_internal:
+                        Report._write_attr(attr, desc)
+                # materials
+                if pointcloud.materials:
+                    desc.write(f"  - {len(pointcloud.materials)} materials\n")
+                    Report._write_collection_single(pointcloud.materials, desc)
+                Report._write_animdata_desc(pointcloud.animation_data, desc)
+                Report._write_custom_props(pointcloud, desc)
+                desc.write(f"\n")
+
         # objects
         if len(bpy.data.objects):
             desc.write(f"==== Objects: {len(bpy.data.objects)}\n")