feat(eventtemplates): support preset event template type

[andrewazores]

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Related to cryostatio/cryostat#548
Depends on cryostatio/cryostat#733

Description of the change:

See cryostatio/cryostat#733

Motivation for the change:

This change is helpful because users may want to copy the example for easier use...

How to manually test:

1. Run CRYOSTAT_IMAGE=quay.io... sh smoketest.sh...
2. ...

[github-actions]

This PR/issue depends on:

• feat(eventtemplates): add Preset event templates type and Quarkus-specific preset cryostat#733
  By Dependent Issues (🤖). Happy coding!

[andrewazores]

Not sure what's up with the snapshot test failure. It passes fine locally.

[andrewazores]

Ah, I had outdated dependencies installed locally.