Traceability-Foss - Rename Repository name & Sonar project key reorganisation

1. Rename the current Git repository https://github.com/eclipse-tractusx/traceability-foss-frontend to https://github.com/eclipse-tractusx/traceability-foss
2. Adapt repository: https://sonarcloud.io/project/overview?id=eclipse-tractusx_traceability-foss-frontend  >> eclipse-tractusx_traceability-foss
3. Adapt repository: https://sonarcloud.io/project/overview?id=eclipse-tractusx_traceability-foss-backend >> eclipse-tractusx_traceability-foss

BE and FE share same repository traceability-foss-frontend but MUST have different sonar projects as mentioned above.

Thank you very much Martin