[SNAPSHOT] Migrate WorldBorder API to use ticks

[Doc94]

This PR try to manage the breaking change in the last snapshot where worldborder time for reduce now works with ticks and not seconds/milis
https://www.minecraft.net/en-us/article/minecraft-snapshot-25w43a

PD: Need test this with the virtual worldborder feature

[Doc94]

A few test i make...

WorldBorder worldBorder = Bukkit.createWorldBorder();
worldBorder.setSize(50);
player.setWorldBorder(worldBorder);

WorldBorder worldBorder = player.getWorldBorder();
if (worldBorder != null) {
   worldBorder.setSize(10, TimeUnit.SECONDS, 10);
}

WorldBorder worldBorder = player.getWorld().getWorldBorder();
worldBorder.setSize(20, TimeUnit.SECONDS, 30);

the border change in the time expected. same for WorldBorderBoundsChangeEvent where the getDuration and Ticks show the value expected.
ex: /worldborder set 1000 600 make duration return 30000 and ticks 600

[Lulu13022002]

This method and the other one should probably be deprecated (with a new method) now since the duration is in ticks and 20 ticks is not always equivalent to 1s especially with the tick command. That's the whole reason the bukkit scheduler doesn't have the TimeUnit equivalent.

[Doc94]

How can replace this?
i cannot make another method like this not? unless mark the deprecation to use the method with timeunit and include a see to the Tick TimeUnit