Add Tool for hierarchical finance agent (#10924)

...x-integrations/tools/llama-index-tools-finance/.gitignore

...-index-integrations/tools/llama-index-tools-finance/BUILD

...dex-integrations/tools/llama-index-tools-finance/Makefile

...ex-integrations/tools/llama-index-tools-finance/README.md

...ls/llama-index-tools-finance/examples/finance_agent.ipynb

...llama-index-tools-finance/llama_index/tools/finance/BUILD

...index-tools-finance/llama_index/tools/finance/__init__.py

...ama-index-tools-finance/llama_index/tools/finance/base.py

...ex-tools-finance/llama_index/tools/finance/comparisons.py

...index-tools-finance/llama_index/tools/finance/earnings.py

...ama-index-tools-finance/llama_index/tools/finance/news.py

...ama-index-tools-finance/llama_index/tools/finance/util.py

...-integrations/tools/llama-index-tools-finance/poetry.lock

...tegrations/tools/llama-index-tools-finance/pyproject.toml

...-integrations/tools/llama-index-tools-finance/tests/BUILD

...rations/tools/llama-index-tools-finance/tests/__init__.py

...ols/llama-index-tools-finance/tests/test_finance_tools.py