Eventarc Trigger

[modular-magician]

Add eventarc resource as the first DCL-based resource.

Lots of handwritten parts that can be cleaned up in the future when tpgtools+mmv1 are better integrated

Currently DCL-based resources fail VCR testing because the client is copied & saved during client creation, making us unable to swap during testing

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google_eventarc_trigger

Derived from GoogleCloudPlatform/magic-modules#4476