KSpigot 1.19 (#50)

* Use new papermc repo url

* Update gradle plugins

* Update paper dependencies to 1.19 and bump version

* Package renames

* Update to kotlin 1.7.0

* Update kotlinx-serialization-json to 1.3.3

* Update kotlinx-coroutines to 1.6.2

* Correct version bump

* Update versions in gradle_example.md

* update some guide stuff

Co-authored-by: l4zs <business@l4zs.de>

guide/docs/extensions/itembuilder.md

@@ -11,7 +11,9 @@ val sword = itemStack(Material.GOLDEN_SWORD) {
     amount = 3
     addEnchantment(Enchantment.KNOCKBACK, 2)
     meta {
-        name = "${KColors.GOLD}Magic Sword"
+        name = literalText("Magic Sword") {
+            color = KColors.GOLD
+        }
         isUnbreakable = true
         addLore {
             +"This sword is truly special."
@@ -20,7 +22,7 @@ val sword = itemStack(Material.GOLDEN_SWORD) {
         customModel = 1001
         flag(ItemFlag.HIDE_UNBREAKABLE)
     }
-} 
+}
 ```
 ### This creates the following item