[Feature]Request to add currency type to reporting tables

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

- [X] I have searched the existing issues

### Describe the Feature

The output tables in the google_ads reporting tables have a spend column, but we need to know what they currency type is USD, CAN, etc.) so that we can convert the value based on a currency conversion factor.

### Describe alternatives you've considered

Writing the same report as a view in sql.

### Are you interested in contributing this feature?

- [ ] Yes.
- [ ] 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.
- [X] No.

### Anything else?

_No response_