fix: make sure Vikunja is buildable without swagger docs present

pkg/version/swagger.go

@@ -0,0 +1,26 @@
+// Vikunja is a to-do list application to facilitate your life.
+// Copyright 2018-2023 Vikunja and contributors. All rights reserved.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public Licensee as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public Licensee for more details.
+//
+// You should have received a copy of the GNU Affero General Public Licensee
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+//go:build swagger
+// +build swagger
+
+package version
+
+import "code.vikunja.io/api/pkg/swagger"
+
+func init() {
+	// Additional swagger information
+	swagger.SwaggerInfo.Version = Version
+}