[Add Dataset] SEEDBench 2 Plus

[abzb1]

Add the SEEDBench 2 Plus dataset and minor change in dataset docs.

Key Changes:

1. Add SEEDBench 2 Plus Dataset:
   Added the SEEDBench 2 Plus dataset proposed in the paper, which already implemented in VLMEvalKit.

2. Rename Existing SEEDBench 2 Task Names:
   Changed the task names in the existing SEEDBench 2 dataset from hyphens (-) to underscores (_) to maintain consistency with other datasets. (seedbench-2 -> seenbench_2)

3. Add Descriptions for seedbench 2 plus:
   Added descriptions for seedbench 2 plus

I have completed tests for SEEDBench 2 Plus benchmark on several models with this code change, but please leave a comment if further review is needed.

The data uploaded to the datasets repository was created with the following code:

data_json_fname = "SEED-Bench-2-plus-text-rich.json"
data = json.load(open(data_json_fname))

for i, d in enumerate(tqdm(data)):
    img = d["data_id"]
    img = Image.open(img)
    data[i]["image"] = img

data_in_list_dict = {k: [d[k] for d in data] for k in data[0]}

ds = Dataset.from_dict(data_in_list_dict)
ds.push_to_hub("doolayer/my-image-dataset")

If the datasets repository should be managed by lmms-lab, I would appreciate comments on the necessary steps to handle that aspect.

Thank you.

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Thank you for your contributions!

[Luodian]

Thanks for the integration, looks pretty good!