refactor: toolkits

[Wendong-Fan]

Description

Describe your changes in detail.

Motivation and Context

Why is this change required? What problem does it solve?
If it fixes an open issue, please link to the issue here.
You can use the syntax close #15213 if this solves the issue #15213

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

Types of changes

What types of changes does your code introduce? Put an x in all the boxes that apply:

• 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.

[ZackYule]

At this point, all toolkit usage methods are fully supported, and the presentation of these methods has been unified (with the exception of OpenAPIToolkit):
Toolkits that don’t support FUNCS and require configuration no longer need to have the get_tools method manually written;
Toolkits that do support FUNCS should define tools as functions and override the get_tools method in a standardized format.

[ZackYule]

Initial support has been added for using multiple tool instances within the same toolkit class, but further improvements will require adding support for modifying the docstrings of tool instances.

[yiyiyi0817]

At this point, all toolkit usage methods are fully supported, and the presentation of these methods has been unified (with the exception of OpenAPIToolkit): Toolkits that don’t support FUNCS and require configuration no longer need to have the get_tools method manually written; Toolkits that do support FUNCS should define tools as functions and override the get_tools method in a standardized format.

If needed, I can help to integrate OpenAPIToolkit to the Tookit Manager.

[ZackYule]

At this point, all toolkit usage methods are fully supported, and the presentation of these methods has been unified (with the exception of OpenAPIToolkit): Toolkits that don’t support FUNCS and require configuration no longer need to have the get_tools method manually written; Toolkits that do support FUNCS should define tools as functions and override the get_tools method in a standardized format.

If needed, I can help to integrate OpenAPIToolkit to the Tookit Manager.

That would be great. Thanks @yiyiyi0817