feat(gemini2): add OrbbecSDK_ROS2/

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+## Enabling and Visualizing Point Cloud in ROS 2
+
+This section demonstrates how to enable point cloud data output from the camera node and visualize it using RViz2, similarly to the initial camera node setup discussed in the [Starting Camera Node](./start_camera_node.MD) document.
+
+### Enabling Depth Point Cloud
+
+#### Command to Enable Depth Point Cloud
+
+To activate the point cloud data stream for depth information, use the following command:
+
+```bash
+ros2 launch orbbec_camera gemini_330_series.launch.py enable_point_cloud:=true
+```
+
+#### Visualizing Depth Point Cloud in RViz2
+
+After running the above command, perform the following steps to visualize the depth point cloud:
+
+1. Open RViz2.
+2. Add a `PointCloud2` display.
+3. Select the `/camera/depth/points` topic for visualization.
+4. Set the fixed frame to `camera_link` to properly align the data.
+
+##### Example Visualization
+
+Here is what the depth point cloud might look like in RViz2:
+
+![Depth Point Cloud Visualization](./images/image5.jpg)
+
+### Enabling Colored Point Cloud
+
+#### Command to Enable Colored Point Cloud
+
+To enable the colored point cloud feature, enter the following command:
+
+```bash
+ros2 launch orbbec_camera gemini_330_series.launch.py enable_colored_point_cloud:=true
+```
+
+#### Visualizing Colored Point Cloud in RViz2
+
+To visualize the colored point cloud data:
+
+1. Launch RViz2 following the command execution.
+2. Add a `PointCloud2` display panel.
+3. Choose the `/camera/depth_registered/points` topic from the list.
+4. Ensure the fixed frame is set to `camera_link`.
+
+##### Example Visualization
+
+The result of the colored point cloud in RViz2 should look similar to this:
+
+![Colored Point Cloud Visualization](./images/image6.jpg)