DiscordSchematicUploader

Fixes compatibility with latest (1.27.0) version of DiscordSRV.

• Added support for FastAsyncWorldEdit's per-player schematic feature.
• Fixed an issue with config values not being saved after updating if they contained colons.

The ability to cancel upload of a schematic if it contains certain blocks/entities/messages/commands etc was added but the implementation was really terrible and caused a lot of lag so that'll be on the next update instead.

• Added a configurable naming scheme for schematics.