Add more metrics in Stock Financials vX EndPoint

[leonius-xl]

Current endpoint response miss some important metrics. Those metrics are important part of financial data endpoint. It will be great if team can add them.

balance_sheet:

• receivables
• goodwill
• short_term_investments
• long_term_investments
• treasury_stock
• retained_earnings

cash_flow:

• capital_expenditures

income_statement:

• selling_general_and_administrative