refactor(test_cache.py): update import statements and function names
test(cache): add tests for load_or_build_langchain_object, build_langchain_object_with_caching, build_graph, and cache size limit
feat(cache): add support for pandas and PIL Image objects caching
fix(interface): import cache-related functions from base.py module
test(cache): update import statements in cache-related test file
