Introduce min glasskube version for packages

[pmig]

Is your feature request related to a problem? Please describe.
We currently already have packages available in glasskube/packages that are not compatible with the current release, but only with the main branch. This will also happen in future as we are rapidly evolving.

Describe the solution you'd like
Add a requiredVersion SemVer range to our package manifest, which is evaluated during package installation and package updates against the client and controller version.

Describe alternatives you've considered
Introduce a more sophisticated merge / release workflow, but it is hard to fully control this as users might use different versions of Glasskube along the way.

Additional context
This ticket is slightly related to #112

[hanshal101]

Hey @pmig I would like to work on this.