Master Preload

[Forbiddenz]

Added ability to preload all the landblocks in the game.
This is a massive process, but its a great tool for testing or even benchmarking in the near future.

[Mogwai-TheFurry]

I like the ability to force a landblock to load from the command line, however...

1. Make it so that you can specify the landblock id. "loadLandblock X". The parameter is the ushort landblock id.
2. To load them all, perhaps a separate command for "loadAllLandblocks". this needs to start a new thread or Task.
3. Add a new function in LandblockManager that does the load, accepts the landblock Id, but does not return the block. For example:

public void PreLoadLandblock(LandblockId landblockId)
{
    GetLandblock(landdblockId, false);
}

4. The new thread or task needs an interrupt mechanism so that it can be cancelled by a separate command or by the server shutdown command.

[Forbiddenz]

Made Changes.