feat: Simplify ChatWatsonx implementation, added base tests (#31) #91

Job	Run time
build	6s
cd libs/ibm / make lint #3.8	2m 16s
cd libs/ibm / poetry run pytest -m compile tests/integration_tests #3.8	2m 9s
cd libs/ibm / make lint #3.11	2m 0s
cd libs/ibm / make test #3.8	2m 6s
cd libs/ibm / poetry run pytest -m compile tests/integration_tests #3.9	1m 55s
cd libs/ibm / make test #3.9	1m 51s
cd libs/ibm / poetry run pytest -m compile tests/integration_tests #3.10	1m 45s
cd libs/ibm / make test #3.10	2m 2s
cd libs/ibm / poetry run pytest -m compile tests/integration_tests #3.11	1m 44s
cd libs/ibm / make test #3.11	1m 55s
CI Success	1s
	19m 50s

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