Add Closeable/AutoCloseable to the interface liquibase.database.Database

[zorglube]

Environment

Liquibase Version: The incoming release.
Liquibase Integration & Version: All
Liquibase Extension(s) & Version: All
Database Vendor & Version: All
Operating System Type & Version: All
Infrastructure Type/Provider: All

Description

Hello,

Since I started working a few on the module Pre-Liquibase, I digged a few in Liquibase sources and I saw something that might be usefull.
Is this possible to add the interface java.io.IOException.Closeable to the interface interface liquibase.database.Database, that will allow to use Database in try with resources.

Actual Behavior

Since Database don't implement Closeable it's not possible to use it into try with resources.

Expected/Desired Behavior

Having the possibiliy to use Database into try with resources.

[zorglube]

I started a PR #2990