Remove tags unrelated to hopr-core

[nionis]

• [ ] Remove all tags that are not in the format 0.6.x from the project. To remove a tag, just push git push origin :tag

[0xjjpa]

Definitely confusing for a newcomer. We definitely need to stick to a pattern:

• Keep the v?
• Add namespace? e.g. hopr-core@$version

[0xjjpa]

After discussing with @peterbraden we agreed to move away from the monorepo setup as to avoid these issues. We'll change this task to remove the old tags and stick to hopr-core tags for the time being.

[peterbraden]

I kept both X.X.X and vX.X.X