Preparations for plugin prioritisation and metadata merging

plugin-api/src/main/kotlin/de/grimsi/gameyfin/pluginapi/gamemetadata/GameMetadata.kt

@@ -1,28 +1,29 @@
 package de.grimsi.gameyfin.pluginapi.gamemetadata
 
-import java.net.URL
+import java.net.URI
 import java.time.Instant
 
 class GameMetadata(
     val title: String,
-    val description: String,
-    val coverUrl: URL,
-    val release: Instant,
-    val userRating: Int?,
-    val criticRating: Int?,
-    val developedBy: Set<String>,
-    val publishedBy: Set<String>,
-    val genres: Set<Genre>,
-    val themes: Set<Theme>,
-    val keywords: Set<String>,
-    val screenshotUrls: Set<URL>,
-    val videoUrls: Set<URL>,
-    val features: Set<GameFeature>,
-    val perspectives: Set<PlayerPerspective>
+    val description: String? = null,
+    val coverUrl: URI? = null,
+    val release: Instant? = null,
+    val userRating: Int? = null,
+    val criticRating: Int? = null,
+    val developedBy: Set<String>? = null,
+    val publishedBy: Set<String>? = null,
+    val genres: Set<Genre>? = null,
+    val themes: Set<Theme>? = null,
+    val keywords: Set<String>? = null,
+    val screenshotUrls: Set<URI>? = null,
+    val videoUrls: Set<URI>? = null,
+    val features: Set<GameFeature>? = null,
+    val perspectives: Set<PlayerPerspective>? = null
 )
 
 enum class Genre {
     UNKNOWN,
+    ACTION,
     PINBALL,
     ADVENTURE,
     INDIE,
@@ -30,6 +31,7 @@ enum class Genre {
     VISUAL_NOVEL,
     CARD_AND_BOARD_GAME,
     MOBA,
+    MMO,
     POINT_AND_CLICK,
     FIGHTING,
     SHOOTER,