Added SQLite support

[YoSoyVillaa]

No description provided.

[mnewt00]

Going of from what I can see in the code, it isn't bad although some changes could be made. I don't see much of a point of using SQLite rather than Vulcan's own flat-file storage logs.

I'll also need to test this all in-game later, however, VDB 1.0.4 likely wouldn't be released for a while as I don't have much motivation.

[YoSoyVillaa]

Cause of my MySQL configuration, I don't know why but it drops VulcanDatatabase's connection (only to this plugin), and flat files of Vulcan have a horrible performance, so I made it compatible with SQLite and make the PR if you want to add it in the future, and therefore save you work.

I think this could work, I have to make connection not final to modify it, because if I try to put connection = null on catch clause, the IDE forces me to use a temp variable (connection1), I think you understood me, didn't you?

On the other side, I have tested it on my network and it works correctly, but I think anyway to will test it :)