Utilize a child-first strategy for resource loading

[shanman190]

What's changed?

Load resources from the child classloader first, then attempt the parent classloader.

What's your motivation?

For recipe jars, such as rewrite-gradle and others, we desire to load resources from the recipe jar itself.

Anyone you would like to review specifically?

@jkschneider or delegate

Checklist

• I've added unit tests to cover both positive and negative cases
• I've read and applied the recipe conventions and best practices
• I've used the IntelliJ IDEA auto-formatter on affected files