add try-except around json loaders

[IlamaranMagesh]

Pre-PR Checklist

• This PR is a bug fix, not a new feature or enhancement.

Summary

Closes #173

This PR has added try-except block for the JSON loaders in all the files except for the files in tests folder.

Bug / Issue

Issue - #173

There were couple of JSON objects parsed without any validation. This can crash the system when the response received from the APIs or the file that has been loaded is either not a JSON or corrupted.

Implementation

Added try-except blocks across files, except in the tests folder. It can be updated, if it's required by the maintainers

Testing

• Run pre-commit
• Run Pytest

Pytest Coverage Report

================================ tests coverage ================================
______________ coverage: platform darwin, python 3.12.12-final-0 _______________

Name                                        Stmts   Miss  Cover
---------------------------------------------------------------
mesa_llm/__init__.py                           13      0   100%
mesa_llm/llm_agent.py                         114      9    92%
mesa_llm/memory/episodic_memory.py            103      6    94%
mesa_llm/memory/lt_memory.py                   63      4    94%
mesa_llm/memory/memory.py                      66      5    92%
mesa_llm/memory/st_lt_memory.py                73      8    89%
mesa_llm/memory/st_memory.py                   41      2    95%
mesa_llm/module_llm.py                         54      1    98%
mesa_llm/parallel_stepping.py                  69     16    77%
mesa_llm/reasoning/cot.py                      68      4    94%
mesa_llm/reasoning/react.py                    62      8    87%
mesa_llm/reasoning/reasoning.py                41      9    78%
mesa_llm/reasoning/rewoo.py                    72      2    97%
mesa_llm/recording/agent_analysis.py          281     30    89%
mesa_llm/recording/record_model.py             45      4    91%
mesa_llm/recording/simulation_recorder.py      79      1    99%
mesa_llm/tools/inbuilt_tools.py                78      5    94%
mesa_llm/tools/tool_decorator.py              151     34    77%
mesa_llm/tools/tool_manager.py                 85      6    93%
---------------------------------------------------------------
TOTAL                                        1558    154    90%
273 passed, 22 warnings in 1.55s

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