feat: rename function to tool in sdk (#2288) #5644

Job	Run time
unit-run (test_vector_embeddings.py)	52s
unit-run (test_client.py)	2m 11s
unit-run (test_client_legacy.py)	2m 20s
unit-run (test_server.py)	1m 28s
unit-run (test_v1_routes.py)	53s
unit-run (test_local_client.py)	1m 18s
unit-run (test_managers.py)	1m 12s
unit-run (test_base_functions.py)	1m 0s
unit-run (test_tool_schema_parsing.py)	2m 27s
unit-run (test_tool_rule_solver.py)	56s
unit-run (test_memory.py)	48s
unit-run (test_utils.py)	59s
unit-run (test_stream_buffer_readers.py)	57s
unit-run (test_summarize.py)	2m 4s
	19m 25s

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