[booster] gemini plugin support shard checkpoint

[flybird11111]

📌 Checklist before creating the PR

• I have created an issue for this PR for traceability
• The title follows the standard format: [doc/gemini/tensor/...]: A concise description
• I have added relevant tags if possible for us to better distinguish different PRs

🚨 #3609

Link this PR to your issue with words like fixed to automatically close the linked issue upon merge

e.g. fixed #1234, closed #1234, resolved #1234

📝 What does this PR do?

gemini plugin support shard checkpoint to avoid large checkpoint files.

Summarize your work here.
if you have any plots/diagrams/screenshots/tables, please attach them here.

💥 Checklist before requesting a review

• I have linked my PR to an issue (instruction)
• My issue clearly describes the problem/feature/proposal, with diagrams/charts/table/code if possible
• I have performed a self-review of my code
• I have added thorough tests.
• I have added docstrings for all the functions/methods I implemented

⭐️ Do you enjoy contributing to Colossal-AI?

• 🌝 Yes, I do.
• 🌚 No, I don't.

Tell us more if you don't enjoy contributing to Colossal-AI.

[github-actions]

The code coverage for the changed files is 85%.

Click me to view the complete report

Name                                                           Stmts   Miss  Cover
----------------------------------------------------------------------------------
colossalai/booster/plugin/gemini_plugin.py                       115     16    86%
colossalai/checkpoint_io/checkpoint_io_base.py                    68     16    76%
colossalai/checkpoint_io/general_checkpoint_io.py                 69      7    90%
colossalai/checkpoint_io/index_file.py                            65     16    75%
colossalai/checkpoint_io/utils.py                                157     33    79%
colossalai/zero/gemini/gemini_ddp.py                             400     66    84%
tests/test_checkpoint_io/test_general_checkpoint_io.py           141      3    98%
tests/test_zero/test_gemini/test_zeroddp_state_dict_shard.py      42      1    98%
----------------------------------------------------------------------------------
TOTAL                                                           1057    158    85%

[github-actions]

The code coverage for the changed files is 85%.

Click me to view the complete report

Name                                                           Stmts   Miss  Cover
----------------------------------------------------------------------------------
colossalai/booster/plugin/gemini_plugin.py                       115     16    86%
colossalai/checkpoint_io/checkpoint_io_base.py                    68     16    76%
colossalai/checkpoint_io/general_checkpoint_io.py                 69      7    90%
colossalai/checkpoint_io/index_file.py                            65     16    75%
colossalai/checkpoint_io/utils.py                                157     33    79%
colossalai/zero/gemini/gemini_ddp.py                             400     66    84%
tests/test_checkpoint_io/test_general_checkpoint_io.py           141      3    98%
tests/test_zero/test_gemini/test_zeroddp_state_dict_shard.py      42      1    98%
----------------------------------------------------------------------------------
TOTAL                                                           1057    158    85%