Add GrandPhysics dataset

[Xiao-Youth]

Motivation

This PR adds support for the GrandPhysics dataset to OpenCompass. GrandPhysics is a evaluation dataset (not yet publicly available) built from A Grand Dictionary of Physics Problems and Solutions (物理学大题典). Dataset file need to be uploaded to OSS.
GrandPhysics_50_questions.json

Modification

1. Dataset file: opencompass/datasets/grand_physics.py

2. Dataset evaluation configuration: opencompass/configs/datasets/GrandPhysics/GrandPhysics_llm_judge_gen.py

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.

[tonysy]

As inline comments

[tonysy]

Please keep the package version for the pre-commit hooks. If you need to change them, please provide the corresponding reasons.

[tonysy]

Also please fix the conflicts via git reabse