feat: enable MCP to models without function calling ability

[TommeyChang]

Description

In this commit, a model without built-in function calling ability can use a MCP tools from giving the tool_name and tool_args. In this case, we can set agents to equip with the same type of tools reducing the search space.

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[MuggleJinx]

History messed up for review, moving to #2128.

[Wendong-Fan]

hey @TommeyChang , this feature has been merged in PR https://github.com/camel-ai/camel/pull/2128, thanks so much for the contribution! Feel free to close this PR at your convenience

[Wendong-Fan]

close as feature merged in another PR