Added new "Capture Mode" system, initially with the "Just Inside" methods, which consists of only having a winner if the capturer is inside the arena, and "Longest Time", which consists of recording the capture time of each player and at the end of the count, if there are no active capturers, the one who captured for the longest time wins.
Added new gui menu for selecting "Capture Mode".
Added new placeholders: %ukoth_control_longesttime:<position>:<type>% with values: <position> = numeric and <type> = player, group or time. (ex: %ukoth_control_longesttime:1:time%)
Updated NBTApi and Gui libs for better functionality in versions 1.21+.