[Feature] Add conversion_history to dbt_linkedin_ads Package

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

- [x] I have searched the existing issues

### Describe the Feature

Hi Fivetran team,

We're using the Fivetran LinkedIn Ads connector and have the conversion_history table syncing into our raw schema (raw_db.fivetran_linkedin_ads.conversion_history).

However, this table is not currently included in the [dbt_linkedin_ads](https://github.com/fivetran/dbt_linkedin_ads) package. Would it be possible or are there any plans to add this table to the package?

Thanks!

### How would you implement this feature?

Create a staging model: stg_linkedin_ads__conversion_history

### Describe alternatives you've considered

_No response_

### Are you interested in contributing this feature?

- [ ] Yes.
- [ ] Yes, but I will need assistance.
- [ ] No.

### Anything else?

_No response_