Small refactoring

plugin-api/src/main/kotlin/de/grimsi/gameyfin/pluginapi/core/GameyfinPlugin.kt

@@ -1,7 +1,18 @@
 package de.grimsi.gameyfin.pluginapi.core
 
-interface GameyfinPlugin {
-    fun getConfigMetadata(): List<PluginConfigElement>
-    fun getCurrentConfig(): Map<String, String?>
-    fun loadConfig(config: Map<String, String?>)
+import org.pf4j.Plugin
+import org.pf4j.PluginWrapper
+
+abstract class GameyfinPlugin(wrapper: PluginWrapper) : Plugin(wrapper) {
+
+    abstract val configMetadata: List<PluginConfigElement>
+    protected open var config: Map<String, String?> = emptyMap()
+
+    open fun getCurrentConfig(): Map<String, String?> {
+        return config
+    }
+
+    open fun loadConfig(config: Map<String, String?>) {
+        this.config = config
+    }
 }