FIXED The plugin just not... working... lol
sorry!

Updated to work with ValhallaMMO API changes

Updated plugin to accommodate ValhallaMMO Beta API changes.

Using /kit alone will now open a menu displaying all the player's available kits, which can then be obtained the same way as by doing a command by clicking on them.

Due to kits being on display now, they get extra properties
A description (changed with /kits setdescription)
A display name (changed with /kits setdisplayname
An icon (changed with /kits seticon)
A Custom Model Data (changed with /kits setmodeldata)

Added PlaceholderAPI placeholders to display a kit's cooldown %valhallakits_kit_cooldown_timestamp1_<kitname>% displays the cooldown in hh:mm:ss format %valhallakits_kit_cooldown_timestamp2_<kitname>% displays the cooldown in h, m, or s.ms format. If a kit has a 24 hour and 30 minute cooldown for example it'll display 24h