refactor(#664): add tools module to reuse licensing

.reuse/dep5

 Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 
-Files: api/src/* client/src/* cli/src/* core/src/* integration-tests/src/*
+Files: api/src/* client/src/* cli/src/* core/src/* tools/src/* integration-tests/src/*
        api/README.md cli/README.md core/README.md
        README.md CHANGELOG.md SECURITY.md
 Copyright: 2022 FIT-Connect contributors
@@ -10,7 +10,7 @@ Files: .mvn/wrapper/* mvnw mvnw.cmd
 Copyright: 2013-2022 The Apache Software Foundation
 License: Apache-2.0
 
-Files: pom.xml api/pom.xml core/pom.xml client/pom.xml cli/pom.xml integration-tests/pom.xml
+Files: pom.xml api/pom.xml core/pom.xml client/pom.xml cli/pom.xml tools/pom.xml integration-tests/pom.xml
        .gitlab-ci.yml .gitignore .m2/release.xml
        renovate.json checkstyle.xml checkstyle-suppressions.xml config.yml
 Copyright: 2022 FIT-Connect contributors