[Feature Request]: Delay database connection during transform/action execution

### What would you like to happen?

Migration: https://issues.apache.org/jira/browse/HOP-2946

As a user I want to have a flag in Hop configuration to controls the moment, database connection's can happen. The need is to be able to say Hop to delay database connection and make it happen not during initialization phase as normally happens but at execution time

### Issue Priority

Priority: 3

### Issue Component

Component: Database

Start with migration HOP-2946 and the database component, then trace how database connections are created during initialization and during transform or action execution. Define the configuration flag's behavior and acceptance criteria for delaying connections; no files or tests are named in the issue, so these must be identified before implementation.

Written by the indexing model from the issue text.