feat: add SurfCoreApiPaperImpl and server name retrieval

- Introduce `SurfCoreApiPaperImpl` implementation extending `SurfCoreApiImpl` for Paper-specific logic.
- Add `getCurrentServerName` method to `SurfCoreApi` and its

Author: TheBjoRedCraft

surf-core-api/surf-core-api-common/src/main/kotlin/dev/slne/surf/core/api/common/SurfCoreApi.kt

@@ -12,5 +12,7 @@ interface SurfCoreApi {
     fun getPlayer(name: String): SurfPlayer?
     fun getPlayer(uuid: UUID): SurfPlayer?
 
+    fun getCurrentServerName(): String?
+
     suspend fun getOfflinePlayer(name: String): SurfPlayer?
 }

surf-core-core/surf-core-core-common/src/main/kotlin/dev/slne/surf/core/core/common/SurfCoreApiImpl.kt

@@ -1,15 +1,12 @@
 package dev.slne.surf.core.core.common
 
-import com.google.auto.service.AutoService
 import dev.slne.surf.core.api.common.SurfCoreApi
 import dev.slne.surf.core.api.common.player.SurfPlayer
 import dev.slne.surf.core.core.common.player.surfPlayerService
 import it.unimi.dsi.fastutil.objects.ObjectSet
-import net.kyori.adventure.util.Services
 import java.util.*
 
-@AutoService(SurfCoreApi::class)
-class SurfCoreApiImpl : SurfCoreApi, Services.Fallback {
+abstract class SurfCoreApiImpl : SurfCoreApi {
     override fun getOnlinePlayers(): ObjectSet<SurfPlayer> = surfPlayerService.players
 
     override fun getPlayer(name: String) = surfPlayerService.findPlayerByName(name)

surf-core-paper/src/main/kotlin/dev/slne/surf/core/paper/api/SurfCoreApiPaperImpl.kt

@@ -0,0 +1,12 @@
+package dev.slne.surf.core.paper.api
+
+import com.google.auto.service.AutoService
+import dev.slne.surf.core.api.common.SurfCoreApi
+import dev.slne.surf.core.core.common.SurfCoreApiImpl
+import dev.slne.surf.core.paper.surfServerConfig
+import net.kyori.adventure.util.Services
+
+@AutoService(SurfCoreApi::class)
+class SurfCoreApiPaperImpl : SurfCoreApiImpl(), Services.Fallback {
+    override fun getCurrentServerName() = surfServerConfig.serverName
+}