[WINDUPRULE-1012] Add rules for the future deprecation of the finalize() methods

[jmle]

The finalize() usage search has been implemented as a {*}.finalize() javaclass condition to avoid creating a where clause with many OR'd conditions inside.

See Jira ticket.

[PhilipCattanach]

@jmle The rules worked fine.
Looking at the https://openjdk.org/jeps/421
This change was introduced in OpenJDK18
So I think the source folder should be openjdk17 not openjdk18
If you can rename that folder then we can get it merged.

[PhilipCattanach]

All good - thanks @jmle