[New Feature] Add_Data_IO_Functions

[Wendong-Fan]

💡 User Story:
As an AI engineer,
I want to add data input capability to CAMEL
So that our user can take different kinds of files as input

🛒 Types of Changes:

• 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)

🚀 Acceptance Criteria:

1. Functional code can handle with:
   .docx
   .pdf
   .txt
   .html
   .json
   Convert information from all these file types into string

2. Apply the functional code to CAMEL master branch successfully, and pass all tests.

🔀 Related User Stories:
No story related

🛠️ Technical Details:
Use BytesIO, reference Langchain data input module

📑 Tasks:
.docx
.pdf
.txt
.html
.json

🔑 Dependencies:
No dependencies needed

🤝 Required Prerequisites:

• I have read the documentation https://camel-ai.github.io/camel/camel.html.
• I have searched the Issue Tracker and Discussions that this hasn't already been reported. (+1 or comment there if it has.)
• Consider asking first in a Discussion.

[Wendong-Fan]

Hi @lightaime , I have finished the first version data I/O module, for the linting test, I used # type: ignore to pass the test (see my last two commits) since I don't know how can I fix it in another way. Please feel free to review my code and give me suggestions or comments, thank you~

[Obs01ete]

The code is good overall. You bring in some binaries for the purpose of testing. They are smaller than 1 MB and it is fine. However test/data_samples/test_hello_multi.pdf is quite big, 300kb. Let it be. Also I am not sure what to do with this poetry lock. Is it possible to revert all hunks except for the newly added packages?

[Obs01ete]

Remove # type: ignore, instead add them to mypy exceptions in pyproject.toml.

[Wendong-Fan]

Hi Dmitrii, thank you for your review, I have made the adjustment as you suggested and I used poetry lock to update the poetry.lock file

[dandansamax]

Useful feature, Thanks! Just leave some comments of docs and code style. Committing poetry.lock is necessary since this PR update dependencies

[dandansamax]

Hi Wendong. Thank you for your high quality code. Please feel free to merge it if no more comments.

[Obs01ete]

All good. Approved.

[lightaime]

The docstring format of this PR is not consistent with others. We may need to fix the format.