Specifications for datastructures, interfaces, and file formats

Since most of the specifications are relevant and implemented in cc-backend they will use the same versioning.

• Generic datastructure specifications: To be used in applications, as payloads in apis, or as file formats.
• APIs offered by ClusterCockpit: REST, and Influx Line protocol descriptions.
• HPC Job-Archive specification: A directory tree and file format description for a file based HPC Job Performance archive.