Merge branch '416-hotfix-import-of-csv' into 'dev'

.docs/system-services-metadata.md

.gitlab-ci.yml

dbrepo-analyse-service/pytest.ini

dbrepo-metadata-db/setup-schema.sql

...src/main/java/at/tuwien/api/database/query/ImportDto.java

.../database/table/constraints/foreignKey/ForeignKeyDto.java

...src/main/java/at/tuwien/entities/database/ViewColumn.java

...rc/main/java/at/tuwien/entities/database/table/Table.java

...ies/database/table/constraints/foreignKey/ForeignKey.java

...en/entities/database/table/constraints/unique/Unique.java

...tories/src/main/java/at/tuwien/mapper/DatabaseMapper.java

...ositories/src/main/java/at/tuwien/mapper/QueryMapper.java

...ositories/src/main/java/at/tuwien/mapper/TableMapper.java

...positories/src/main/java/at/tuwien/mapper/ViewMapper.java

...rc/main/java/at/tuwien/endpoints/TableColumnEndpoint.java

.../src/main/java/at/tuwien/endpoints/TableDataEndpoint.java

...service/src/test/java/at/tuwien/config/MariaDbConfig.java

...java/at/tuwien/endpoints/TableColumnEndpointUnitTest.java

...t/java/at/tuwien/endpoints/TableDataEndpointUnitTest.java

...rc/test/java/at/tuwien/mvc/PrometheusEndpointMvcTest.java