use the adventure api

- migrate BungeeCord Chat API to Adventure API
- add some functions to literalText
- update some dependencies and plugins

src/main/kotlin/net/axay/kspigot/extensions/GeneralExtensions.kt

@@ -1,6 +1,9 @@
+@file:Suppress("Unused")
+
 package net.axay.kspigot.extensions
 
 import net.axay.kspigot.main.PluginInstance
+import net.kyori.adventure.text.Component.text
 import org.bukkit.Bukkit
 import org.bukkit.NamespacedKey
 import org.bukkit.World
@@ -36,7 +39,7 @@ val pluginManager get() = Bukkit.getPluginManager()
  * @return the number of recipients
  * @see Bukkit.broadcastMessage
  */
-fun broadcast(msg: String) = Bukkit.broadcastMessage(msg)
+fun broadcast(msg: String) = Bukkit.getServer().broadcast(text(msg))
 
 /**
  * Shortcut to get the ConsoleSender.

src/main/kotlin/net/axay/kspigot/extensions/bukkit/EntityExtensions.kt

@@ -1,3 +1,5 @@
+@file:Suppress("Unused")
+
 package net.axay.kspigot.extensions.bukkit
 
 import net.axay.kspigot.annotations.NMS_General
@@ -5,7 +7,6 @@ import net.axay.kspigot.chat.literalText
 import net.axay.kspigot.extensions.onlinePlayers
 import net.axay.kspigot.main.PluginInstance
 import net.axay.kspigot.pluginmessages.PluginMessageConnect
-import net.md_5.bungee.api.ChatMessageType
 import org.bukkit.Location
 import org.bukkit.Material
 import org.bukkit.attribute.Attribute
@@ -146,7 +147,7 @@ fun Player.getHandItem(hand: EquipmentSlot?) = when (hand) {
  * Sends the given [text] as an action bar message.
  */
 fun Player.actionBar(text: String) {
-    spigot().sendMessage(ChatMessageType.ACTION_BAR, literalText { legacyText(text) })
+    sendActionBar(literalText { legacyText(text) })
 }
 
 /**

src/main/kotlin/net/axay/kspigot/extensions/bukkit/MetaExtensions.kt

@@ -1,11 +1,12 @@
 package net.axay.kspigot.extensions.bukkit
 
+import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer
 import org.bukkit.inventory.meta.BookMeta
 
 val BookMeta.content
     get() =
         StringBuilder().apply {
-            for (it in pages) {
+            for (it in pages().map { LegacyComponentSerializer.legacy('§').serialize(it) }) {
                 if (isNotEmpty())
                     append('\n')
                 append(it)