* When training of function calls, "tools" elements of a dataset can contain same parameter name but with different types. Datasets fails to load such training set. This fix allows "parameters" element of function call to be string( by running "json.dumps" in preparation of training data set). The _get_tools function will iterate over tool definitions, if "parameters" element is dict, it will keep that way, if it is a string, it will be converted to dict by invoking "json.loads" on string value.
* feat: add doc on tool parameters json loading
* feat: add tests for parameters json string
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Co-authored-by: ezlotnik <eduard_zlotnik@intuit.com>
Co-authored-by: NanoCode012 <nano@axolotl.ai>
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