[core] Update CRDs from "v1beta1" to "v1"

[ricoberger]

We updated all our CRDs from version "v1beta1" to "v1". This effects the
Custom Resource Definition for Applications, Dashboards, Teams and
Users.

This was done in preparation of the v1.0.0 release, which marks the
first stable version of kobs. Until the release we do not expect any
breaking changes in the CRDs, but if they are necessary, we will do
them. After the v1.0.0 release changes to the CRDs should always be
backwards compatible.

• I added a CHANGELOG entry for this change.
• I adjusted the corresponding documentation for this change.
• I adjusted the values.yaml file and the documentation for all values.

[codecov-commenter]

Codecov Report

Merging #284 (f8ecdad) into main (333e312) will not change coverage.
The diff coverage is 94.54%.

@@           Coverage Diff           @@
##             main     #284   +/-   ##
=======================================
  Coverage   44.89%   44.89%           
=======================================
  Files          96       96           
  Lines        8032     8032           
=======================================
  Hits         3606     3606           
  Misses       4394     4394           
  Partials       32       32           

Impacted Files	Coverage Δ
pkg/api/middleware/auth/context/context.go	100.00% <ø> (ø)
plugins/applications/pkg/topology/topology.go	100.00% <ø> (ø)
plugins/flux/pkg/sync/sync.go	0.00% <0.00%> (ø)
pkg/api/clusters/cluster/cluster.go	29.79% <95.23%> (ø)
pkg/api/clusters/cluster/defaults.go	100.00% <100.00%> (ø)
pkg/api/middleware/auth/auth.go	96.59% <100.00%> (ø)
plugins/applications/applications.go	100.00% <100.00%> (ø)
plugins/applications/pkg/tags/tags.go	100.00% <100.00%> (ø)
plugins/applications/pkg/teams/teams.go	100.00% <100.00%> (ø)
plugins/dashboards/dashboards.go	100.00% <100.00%> (ø)
... and 3 more

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