Connection management fixes

[psygate]

Updated CitadelDAO with some preemptive fixes. This should add some clarity to deadlocking issues when diagnosed.

Adressed issues:

• CitadelDAO - Code Style in batch mode commits lacks clarity Civ#117
• CitadelDAO - Best Practices Civ#118
• CitadelDAO - Best Practices Civ#119
• CitadelDAO - Best Practices Civ#120
• CitadelDAO - Logging Civ#123
• CitadelDAO - Timings Civ#124
• Citadel DAO - Dangerous connection & commit management Civ#125
• CitadelDAO - Code Style issues, SQL Statement Parameter binding Civ#113
• CitadelDAO - Potential Deadlock Civ#114
• CitadelDAO - Connection names are misleading, Connection type can be readonly in many cases. Civ#115

[Diet-Cola]

Some of these are definitely my bad from lack of knowledge, more specifically the use of .autoCommit() however these fixes at the time massively overhauled the time taken to shutdown the server when CivClassics was taking 10+ mins per plugin to save out data on shutdown.

Thank you for the reviews and pull requests!

[psygate]

Test my changes thoroughly before putting them live. I'm a dumdum just like everybody else.
No shame in learning.

[Aleksey-Terzi]

Overall looks good.

A couple of things:

1. Not sure about Timer class, looks like we will be getting too much spam in the log?

2. Good work on batches, though maybe we don't need batches at all?
   Previously we didn't have a periodic data saving and therefore the plugin was saving all changes accumulated for the day.
   Though now we save data every 1 min (the async task in CivModCore) and the shutdown just saves data that wasn't saved in the last 1 min.
   At the same time, batches make code more complicated.
   Therefore I propose to delete the batching at all.

[Aleksey-Terzi]

Not sure we need to create this list here.
The consumer function is pretty fast, this is what the consumer calls in the end (isNew = false):
https://github.com/CivMC/CivModCore/blob/master/paper/src/main/java/vg/civcraft/mc/civmodcore/world/locations/chunkmeta/block/BlockBasedChunkMeta.java#L227