feat: minimum support for unrefed object cleanup

server/prisma/models/content.prisma

@@ -24,11 +24,11 @@ model Game {
     mReviewCount  Int
     mReviewRating Float // 0 to 1
 
-    mIconId        String // linked to objects in s3
-    mBannerId      String // linked to objects in s3
-    mCoverId       String
-    mImageCarousel String[] // linked to below array
-    mImageLibrary  String[] // linked to objects in s3
+    mIconObjectId           String // linked to objects in s3
+    mBannerObjectId         String // linked to objects in s3
+    mCoverObjectId          String
+    mImageCarouselObjectIds String[] // linked to below array
+    mImageLibraryObjectIds  String[] // linked to objects in s3
 
     versions        GameVersion[]
     libraryBasePath String        @unique // Base dir for all the game versions
@@ -80,7 +80,7 @@ model SaveSlot {
     lastUsedClientId String?
     lastUsedClient   Client? @relation(fields: [lastUsedClientId], references: [id])
 
-    history          String[] // list of objects
+    historyObjectIds String[] // list of objects
     historyChecksums String[] // list of hashes
 
     @@id([gameId, userId, index], name: "id")