Issue 1445 apply generated annotation

[aulea]

Solution for #1445
Mark grails-GORM Traits methods as Generated and also with AST transformation added methods/constructors, so Jacoco could ignore them in its coverage reports.

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[demus-nine]

When is this going to be merged? It's been waiting since april, so now someone needs to give it some care.
It's a blocker for anyone trying to use jacoco (because it's the only one that can handle compilestatic code) and gorm for coverage. Cobertura and openclover seem to have been abandoned.

[danieldemus]

Anyone? Without this you can't do meaningful coverage with grails, which in many cases is a requirement automatically disqualifying the framework from consideration.

[boardbloke]

Hi @puneetbehl ,

Is there any chance of getting this changed merged into the branch of grails-data-mapping being used by the latest grails? It looks like its been committed to the 7.0.x branch but not pulled into 7.2.x or above - lack of @generated is causing all our coverage reports to look horrible