Fix wrongly formatted values on stocks/fa/cash

[hjoaquim]

Description

• Summary of the change / bug fix.

1. Enhance the lambda_long_number_format by adding to more check to str types:
   a. starts with "0" -> if yes, most likely is some kind of ID
   b. is a valid date (Y-M-D)
2. Convert str dates to actual datetime objects on fmp_model.clean_metrics_df

• Link # issue, if applicable.
  Fix [Bug] Stocks/FA/Cash - Value for CIK number and Calendar Year is X.XXX M/K #4203

• Screenshot of the feature or the bug before/after fix, if applicable.
  After fix:
  

• Relevant motivation and context.
  🐛 💀

• List any dependencies that are required for this change.
  NA

How has this been tested?

stocks/load aapl/fa/income
stocks/load aapl/fa/cash
stocks/load aapl/fa/balance

• Please describe the tests that you ran to verify your changes.
• Provide instructions so we can reproduce.
• Please also list any relevant details for your test configuration.

• Make sure affected commands still run in terminal
• Ensure the SDK still works
• Check any related reports

Checklist:

• I have adhered to the GitFlow naming convention and my branch name is in the format of feature/feature-name or hotfix/hotfix-name.
• Update our documentation following these guidelines. Update any user guides that are affected by the changes.
• Update our tests following these guidelines.
• Make sure you are following our CONTRIBUTING guidelines.
• If a feature was added make sure to add it to the corresponding integration test script.

Others

• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.

[jmaslek]

Does this also need to be applied to some of the other commands (i.e balance/income)

[hjoaquim]

@jmaslek already being applied as the 3 of them use fmp_model.clean_metrics_df

[jmaslek]

@jmaslek already being applied as the 3 of them use fmp_model.clean_metrics_df

nice. sorry was being proactive and havent looked yet

[jmaslek]

Works on my end!

[hjoaquim]

@jmaslek thanks for fixing the tests and reviewing!