Create additional milestones and issues as necessary.

• h5fst-package (compare https://git.rwth-aachen.de/fst-tuda/projects/nfdi4ing/projects/h5-tools/pyh5-migration/-/milestones/1)
• kkn-pacakage less priority (should be mentioned, cause this is downwardscompatibility)
• migration and the deprecated version