chore: add licenses

application/source/translations/locales/catalog.go

+// Copyright 2023 schukai GmbH
+// SPDX-License-Identifier: AGPL-3.0
+

application/source/translations/translations.go

+// Copyright 2023 schukai GmbH
+// SPDX-License-Identifier: AGPL-3.0
+
 package translations
 
 //go:generate gotext -srclang=en update -out=catalog.go -lang=en,de gitlab.schukai.com/oss/utilities/documentation-manager

application/source/utils/array.go

+// Copyright 2023 schukai GmbH
+// SPDX-License-Identifier: AGPL-3.0
+
 package utils
 
 func Contains(s []string, str string) bool {

application/source/utils/strings.go

+// Copyright 2023 schukai GmbH
+// SPDX-License-Identifier: AGPL-3.0
+
 package utils
 
 import (

application/source/utils/strings_test.go

+// Copyright 2023 schukai GmbH
+// SPDX-License-Identifier: AGPL-3.0
+
 package utils
 
 import (

application/source/utils/url.go

+// Copyright 2023 schukai GmbH
+// SPDX-License-Identifier: AGPL-3.0
+
 package utils
 
 import "net/url"