+ Database optimisation

+ Folia support

+ "PvP" setting added

+ Permissions added :
- scs.command.claim : to use /claim
- scs.command.unclaim : to use /unclaim
- scs.command.sclaim : to use /sclaim
- scs.command.claims : to use /claims

+ Fix an issue on claiming

+ Add admin commands :
- /aclaim set-max-length-claim-description <length> : Change the max length of the description of claims.
- /aclaim set-max-length-claim-name <length> : Change the max length of the name of claims.
- /aclaim set-claims-visitors-off-visible <true/false> : Enable/disable the visibility of claims where the visitors setting is disabled.
- /aclaim set-claim-cost <true/false> : Enable/disable the claim cost.
- /aclaim set-claim-cost-multiplier <true/false> : Enable/disable the claim cost multiplier.