fixes #120 - missing source_relation joins

[MatteyRitch]

Please provide your name and company
Matthew Ritchie - Cleartelligence Inc

Link the issue/feature request which this PR is meant to address

Detail what changes this PR introduces and how this addresses the issue/feature request linked above.
This PR brings in the source_relation column and uses in joins where applicable to prevent cross joins when the same ids exist in multiple quickbooks sources.

How did you validate the changes introduced within this PR?
I worked @fivetran-reneeli to identify other models where a change was required. I ran and tested each changed models by replacing the code in my dbt project.

Which warehouse did you use to develop these changes?
postgres

Did you update the CHANGELOG?

• Yes

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

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Feedback

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[fivetran-joemarkiewicz]

Hi @MatteyRitch I am going to be picking up this PR review! One quick question before getting started, there may be some changes I need to make to your PR in order to ensure this will pass our tests when we merge your changes to main. Do you have any concern if I make commits directly to your branch in these cases?

[fivetran-reneeli]

Thanks @MatteyRitch for creating this PR! I have merged this into our working branch to finish off the round of updates before merging into main.