feat: add ludusavi metadata import into database

WARNING: includes debug route

prisma/models/ludusavi.prisma

@@ -0,0 +1,18 @@
+model LudusaviEntry {
+    name    String @id
+    steamId String?
+
+    entries LudusaviPlatformEntry[]
+}
+
+model LudusaviPlatformEntry {
+    ludusaviEntryName String
+    ludusaviEntry     LudusaviEntry @relation(fields: [ludusaviEntryName], references: [name])
+
+    platform Platform
+
+    files    String[]
+    registry String[]
+
+    @@id([ludusaviEntryName, platform])
+}