Make client's backing LoopResources configurable via ConnectionFactoryOptions

[ks-yim]

Motivation:

• Provide a way to configure LoopResources from ConnectionFactoryOption #20

Modifications:

• Add loopResources property in MariadbConnectionFactoryConfiguration and run TcpClienton it.
• Provide Option<LoopResources> to be parsed from ConnectionFactoryOptions and used to build MariadbConnectionFactoryConfiguration.

Please, feel free to close the PR or provide feedback if it doesn't fit into what the library is aiming at.

[rusher]

Thanks for your contribution, this make sense. merged in branch 'maintenance/1.1.x'
btw, test issue for PR have been resolved with 064d5e0

[rusher]

I've been too quick to merge contribution, similar to other open source projects, the MariaDB Corporation needs to have shared ownership of all code that is included. The easiest way to achieve this is by submitting your code under the BSD-new license.

Please indicate in a comment below that you are contributing your new code of the whole pull request, under the BSD-new license.

[ks-yim]

@rusher
I hereby agree to contribute the whole code of this pull request under BSD-new license.

[rusher]

Thanks!