Add LoopResources Configuration Support

[jchrys]

Motivation:
Enhances flexibility by allowing custom LoopResources configuration for optimized event loop management.

Modifications:
Introduced LoopResources configuration option in MysqlConnectionConfiguration and updated relevant documentation.

Result:
Enables performance tuning and flexibility, improving adaptability for various deployment scenarios. Resolves #229

[mirromutth]

LGTM

I have a question for this. We support LOCAL INFILE which is based on AsynchronousFileChannel. AFAIK, if we don't specify an ExecutorService, AsynchronousFileChannel will try to use the global ThreadPool by default. Should we apply the LoopResources to it?

I'm not sure because LoopResources are usually used as TCP resources, and LOCAL INFILE is not a frequently used feature.

[jchrys]

I think we are okay to LoopResources for Tcp only. since AsynchronousFileChannel is using min 0 max Integer.MAX_VALUE executor by default so each opened will have a dedicated thread.(https://github.com/openjdk/jdk/blob/8765b176f97dbf334836f0aa6acd921d114304a9/src/java.base/share/classes/sun/nio/ch/SimpleAsynchronousFileChannelImpl.java#L46)