[Feature] Add Cash flow statement

### Is there an existing feature request for this?

- [X] I have searched the existing issues

### Describe the Feature

It would be nice to have a 'Cash Flow Statement' (like Income Statement and Balance Sheet).
Not sure if there is information on how to know about 'Cash from operating activities', 'Cash from investing activities' and 'Cash from financing activities'

### Describe alternatives you've considered

Writing a cash flow statement using the Income Statement and Balance Sheet

### Are you interested in contributing this feature?

- [ ] Yes.
- [X] Yes, but I will need assistance and will schedule time during your [office hours](https://calendly.com/fivetran-solutions-team/fivetran-solutions-team-office-hours) for guidance.
- [ ] No.

### Anything else?

If anyone would like to work on this feature with a define spec, we would be happy to help set it up