🎞️ add json format to OllamaCommon class #9048

Job	Run time
Python 3.8 extended tests	44s
Python 3.9 extended tests	56s
test with unpublished langchain - Python 3.8	36s
Python 3.10 extended tests	43s
test with unpublished langchain - Python 3.9	36s
Python 3.11 extended tests	40s
test with unpublished langchain - Python 3.10	31s
test with unpublished langchain - Python 3.11	31s
lint / build (3.8)	42s
lint / build (3.11)	33s
compile-integration-tests / Python 3.8	17s
test / Python 3.8	31s
compile-integration-tests / Python 3.9	22s
test / Python 3.9	36s
compile-integration-tests / Python 3.10	17s
test / Python 3.10	36s
compile-integration-tests / Python 3.11	21s
test / Python 3.11	30s
	10m 2s

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