Fix REUSE

build.gradle.kts

@@ -155,6 +155,7 @@ loom {
             property("devauth.enabled", "true")
             property("fabric.log.level", "info")
             property("firmament.debug", "true")
+            property("mixin.debug", "true")
 
             vmArg("-ea")
             vmArg("-XX:+AllowEnhancedClassRedefinition")

src/main/kotlin/moe/nea/firmament/gui/profileviewer/ProfileViewerLibrary.kt

@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2023 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
 package moe.nea.firmament.gui.profileviewer
 
 import com.mojang.brigadier.StringReader