Feature/add class to ledger models

[fivetran-avinash]

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Fivetran created PR

What change(s) does this PR introduce?

• Addition of class_id to quickbooks__general_ledger and quickbooks_general_ledger_by_period, provide class values for all relevant models.

Did you update the CHANGELOG?

• Yes

Does this PR introduce a breaking change?

• 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)

• Yes (Waiting per @fivetran-joemarkiewicz request to potentially fold into the migration PR.)

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

• Yes, Issue/Feature #44 from the Quickbooks transform package.
• No

How did you test the PR changes?

• Buildkite
• Local (please provide additional testing details below)

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

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

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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 on our existing dbt packages or what you'd like to see next.