[Dataset]Add GAIA Datasets

[domonic18]

Motivation

Add GAIA dataset support for OpenCompass
为 OpenCompass 添加 GAIA 数据集支持

Modification

中文说明

• 新增opencompass/datasets/gaia.py 文件，包含从Huggingface或者从本地加载数据集的过程
• 新增opencompass/configs/datasets/GAIA/gaia_gen.py，包含gaia_reader_cfg、gaia_infer_cfg、gaia_eval_cfg的配置
• 更新opencompass/datasets/init.py，增加from .gaia import *
• 更新opencompass/utils/datasets_info.py，增加# GAIA Datasets
• 更新dataset-index.yml，增加GAIA数据集信息

英文说明
Added opencompass/datasets/gaia.py to implement dataset loading from Huggingface or local storage
Added opencompass/configs/datasets/GAIA/gaia_gen.py containing configurations for gaia_reader_cfg, gaia_infer_cfg, and gaia_eval_cfg
Updated opencompass/datasets/init.py with from .gaia import *
Added # GAIA Datasets section in opencompass/utils/datasets_info.py
Updated dataset-index.yml with GAIA dataset metadata

BC-breaking (Optional)

影响：无向后兼容性破坏
理由：本次修改为纯新增功能，未改动现有接口和配置文件结构

Impact: No backward compatibility breaks
Reason: This is a pure feature addition without modifying existing interfaces or config structures

Use cases (Optional)

1、通过命令下载数据集到COMPASS_DATA_CACHE

modelscope download --dataset AI-ModelScope/GAIA --local_dir ./opencompass/data/GAIA

2、通过命令测试API方式调用gaia_gen数据集的过程

opencompass --models custom_api --datasets gaia_gen --debug

1、Download dataset to COMPASS_DATA_CACHE

modelscope download --dataset AI-ModelScope/GAIA --local_dir ./opencompass/data/GAIA

2、Test API-based dataset loading for gaia_gen

opencompass --models custom_api --datasets gaia_gen --debug

Checklist

Before PR:

• Pre-commit or other linting tools are used to fix the potential lint issues.
• Bug fixes are fully covered by unit tests, the case that causes the bug should be added in the unit tests.
• The modification is covered by complete unit tests. If not, please add more unit test to ensure the correctness.
• The documentation has been modified accordingly, like docstring or example tutorials.

After PR:

• If the modification has potential influence on downstream or other related projects, this PR should be tested with those projects.
• CLA has been signed and all committers have signed the CLA in this PR.