Auto-discover classes with upgraded properties

[lptr]

Instead of having to list each class manually in PropertyUpgradeInstrumentationRegistry, find types that contain these properties automatically. We can use an annotation processor to do this.

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cc: @gradle/bt-execution

[asodja]

This is related to #25990. We need annotation processor to run for every project separately to discover classes automatically.

[asodja]

Fixed with #26165