Improve dataset card: Add task category, tags, and update license

This PR enhances the dataset card by adding crucial metadata for improved discoverability and clarity on the Hugging Face Hub.

Specifically, it includes:
- The `task_categories: image-to-video`, accurately reflecting the dataset's primary use case in generative video AI.
- Relevant `tags` such as `video-generation`, `camera-control`, `synthetic`, `unreal-engine`, `3d`, and `multi-camera` to provide more context and help users find the dataset.
- An update to the `license` from `apache-2.0` to `cc-by-nc-4.0`, based on common licensing practices for such datasets and colleague consensus.

The existing comprehensive details about the dataset, its structure, and usage remain unchanged.

README.md

@@ -1,6 +1,16 @@
 ---
-license: apache-2.0
+license: cc-by-nc-4.0
+task_categories:
+- image-to-video
+tags:
+- video-generation
+- camera-control
+- synthetic
+- unreal-engine
+- 3d
+- multi-camera
 ---
+
 [Github](https://github.com/KwaiVGI/ReCamMaster) 
 
 [Project Page](https://jianhongbai.github.io/ReCamMaster/) 
@@ -85,7 +95,7 @@ Note: You can use 'center crop' to adjust the video's aspect ratio to fit your v
 Camera Configurations:
 
 | Focal Length            | Aperture           | Sensor Height | Sensor Width |
-|:-----------------------:|:------------------:|:-------------:|:------------:|
+|:-----------------------:|:------------------:|:-------------:|:------------:|\
 | 18mm, 24mm, 35mm, 50mm  | 10.0, 5.0, 2.4     | 23.76mm       | 23.76mm      |