Delete DAG REST API Functionality

[fritz-astronomer]

Description

The stable REST API seems to be missing the functionality to delete a DAG.
This would mirror clicking the "Trash Can" on the UI (and could maybe eventually power it)

Use case/motivation

No response

Related issues

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[boring-cyborg]

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