Feature/v2 updates

[fivetran-joemarkiewicz]

Are you a current Fivetran customer?

Fivetran created PR

What change(s) does this PR introduce?

This PR includes the following updates:

• Removal of the adwords compatible models
• Removal of the google_ads__ad_adapter model
• Addition of the following new models:
  • google_ads__account_report
  • google_ads__campaign_report
  • google_ads__ad_group_report
  • google_ads__keyword_report
  • google_ads__ad_report
  • google_ads__utm_report
• Added testing for each end model to ensure granularity and accuracy of the modeled data.

Did you update the CHANGELOG?

• [X] Yes

Does this PR introduce a breaking change?

• [X] Yes (please provide breaking change details below.)
• [ ] No (please provide an explanation as to how the change is non-breaking below.)

Did you update the dbt_project.yml files with the version upgrade (please leverage standard semantic versioning)? (In both your main project and integration_tests)

• [X] Yes

Is this PR in response to a previously created Bug or Feature Request

• [ ] Yes, Issue/Feature [link bug/feature number here]
• [X] No

How did you test the PR changes?

• [X] CircleCi
• [X] Local (please provide additional testing details below)

Select which warehouse(s) were used to test the PR

• [X] BigQuery
• [X] Redshift
• [X] Snowflake
• [X] Postgres
• [X] Databricks
• [ ] Other (provide details below)

Provide an emoji that best describes your current mood

🤌 **Feedback** We are so excited you decided to contribute to the Fivetran community dbt package! We continue to work to improve the packages and would greatly appreciate your [feedback](https://www.surveymonkey.com/r/DQ7K7WW) on our existing dbt packages or what you'd like to see next.

[fivetran-joemarkiewicz]

FYI the base branch is feature/google-ads-api-default as that branch will be merged prior to this one and I want to make sure I am not duplicating reviews from the changes made in PR #32

[fivetran-joemarkiewicz]

Thanks so much for this review @fivetran-sheringuyen!

I was able to address all your inline comments with the exception of the questions around the url vs utm debate. I think we should chat more about this live. Once we settle a firm approach on this I will regenerate the docs.

[fivetran-joemarkiewicz]

Things to update before merging:

• [ ] Add not null tests