feat: structured loader

[Wendong-Fan]

Description

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Motivation and Context

close #1325

• I have raised an issue to propose this change (required for new features and bug fixes)

Types of changes

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds core functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (update in the documentation)
• Example (update in the folder of example)

Implemented Tasks

• Subtask 1
• Subtask 2
• Subtask 3

Checklist

Go over all the following points, and put an x in all the boxes that apply.
If you are unsure about any of these, don't hesitate to ask. We are here to help!

• I have read the CONTRIBUTION guide. (required)
• My change requires a change to the documentation.
• I have updated the tests accordingly. (required for a bug fix or a new feature)
• I have updated the documentation accordingly.

[WHALEEYE]

We can probably use a decorator to do this checking to eliminate those similar checking codes

[Wendong-Fan]

if we don't ignore the error we would get

2025-01-10 22:03:12,521 - pandasai.helpers.logger - ERROR - Failed with error: Traceback (most recent call last):
  File "/Users/enrei/Library/Caches/pypoetry/virtualenvs/camel-ai-73PBX6Dc-py3.12/lib/python3.12/site-packages/pandasai/pipelines/chat/code_execution.py", line 85, in execute
    result = self.execute_code(code_to_run, code_context)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/enrei/Library/Caches/pypoetry/virtualenvs/camel-ai-73PBX6Dc-py3.12/lib/python3.12/site-packages/pandasai/pipelines/chat/code_execution.py", line 174, in execute_code
    exec(code, environment)
  File "<string>", line 11, in <module>
  File "/Users/enrei/Library/Caches/pypoetry/virtualenvs/camel-ai-73PBX6Dc-py3.12/lib/python3.12/site-packages/pandasai/safe_libs/restricted_matplotlib.py", line 75, in __getattr__
    raise AttributeError(f"'{name}' is not allowed in RestrictedMatplotlib")
AttributeError: 'tight_layout' is not allowed in RestrictedMatplotlib

any insight for this? @liuxukun2000