Configure run/repair db migrations

Refs: #1517

modules/restserver/src/main/resources/reference.conf

@@ -387,6 +387,20 @@ docspell.server {
       password = ""
     }
 
+    # Additional settings related to schema migration.
+    database-schema = {
+      # Whether to run main database migrations.
+      run-main-migrations = true
+
+      # Whether to run the fixup migrations.
+      run-fixup-migrations = true
+
+      # Use with care. This repairs all migrations in the database by
+      # updating their checksums and removing failed migrations. Good
+      # for testing, not recommended for normal operation.
+      repair-schema = false
+    }
+
     # Configuration for registering new users.
     signup {