feat: Simplify ChatWatsonx implementation, added base tests #85

Job	Run time
build	4s
cd libs/ibm / make test #3.8	1m 59s
cd libs/ibm / make test #3.9	1m 58s
cd libs/ibm / make lint #3.8	2m 6s
cd libs/ibm / poetry run pytest -m compile tests/integration_tests #3.8	2m 3s
cd libs/ibm / make test #3.10	1m 42s
cd libs/ibm / make lint #3.11	1m 52s
cd libs/ibm / poetry run pytest -m compile tests/integration_tests #3.9	1m 41s
cd libs/ibm / make test #3.11	1m 32s
cd libs/ibm / poetry run pytest -m compile tests/integration_tests #3.10	1m 43s
cd libs/ibm / poetry run pytest -m compile tests/integration_tests #3.11	1m 50s
CI Success	1s
	18m 31s

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