feat: add Navigator inventory and corresponding item

- Introduced `NavigatorInventory` with a simple menu setup.
- Created `NavigatorInventoryItem` to interact with the navigator, including item display and interaction logic.

Author: TheBjoRedCraft

src/main/kotlin/dev/slne/surf/lobby/inventory/impl/NavigatorInventory.kt

@@ -0,0 +1,8 @@
+package dev.slne.surf.lobby.inventory.impl
+
+import dev.slne.surf.surfapi.bukkit.api.inventory.dsl.menu
+import dev.slne.surf.surfapi.core.api.messages.adventure.text
+
+fun navigatorInventory() = menu(text("Navigator")) {
+
+}

src/main/kotlin/dev/slne/surf/lobby/inventory/item/impl/NavigatorInventoryItem.kt

@@ -0,0 +1,29 @@
+package dev.slne.surf.lobby.inventory.item.impl
+
+import dev.slne.surf.lobby.inventory.impl.navigatorInventory
+import dev.slne.surf.lobby.inventory.item.InventoryItem
+import dev.slne.surf.surfapi.bukkit.api.builder.buildLore
+import dev.slne.surf.surfapi.bukkit.api.builder.displayName
+import org.bukkit.entity.Player
+import org.bukkit.inventory.ItemType
+
+class NavigatorInventoryItem : InventoryItem {
+    override val slot = 4
+    override val item = ItemType.COMPASS.createItemStack().apply {
+        displayName {
+            primary("Navigator")
+        }
+
+        buildLore {
+            emptyLine()
+            line {
+                info("Klicke, um den Navigator zu öffnen")
+            }
+        }
+    }
+    override val permission: String? = null
+
+    override fun onInteract(player: Player) {
+        navigatorInventory().show(player)
+    }
+}