update style guide, accordingly to recent changes for all import changes for CR

[andriisoldatenko]

Description

This PR update style-guide accordingly to https://dt-rnd.atlassian.net/browse/K8S-10064

How can this be tested?

Read it and compare with #3451 changes

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 57.25%. Comparing base (7677e1f) to head (9a7bef9).

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3462   +/-   ##
=======================================
  Coverage   57.25%   57.25%           
=======================================
  Files         344      344           
  Lines       19791    19791           
=======================================
  Hits        11331    11331           
  Misses       7222     7222           
  Partials     1238     1238           

Flag	Coverage Δ
unittests	57.25% <ø> (ø)

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[0sewa0]

looks good, maybe we could mention exceptions?

example:
Incase multiple versions of the same CR is used (conversion, webhook manager configuration, etc.), use the name of the CR as part of the package alias:

package abc
import (
   dynakubev1beta2  "github.com/Dynatrace/dynatrace-operator/pkg/api/v1beta2/dynakube"
   dynakubev1beta3  "github.com/Dynatrace/dynatrace-operator/pkg/api/v1beta3/dynakube"
)

package abc
import (
	edgeconnectv1alpha1 "github.com/Dynatrace/dynatrace-operator/pkg/api/v1alpha1/edgeconnect"
	edgeconnectv1alpha2 "github.com/Dynatrace/dynatrace-operator/pkg/api/v1alpha2/edgeconnect"
)

Sidenote:
Maybe having dkv1beta2 \ ecv1alpha1 instead of dynakubev1beta2 \ edgeconnectv1alpha1 for aliases be better 🤔

[andriisoldatenko]

package abc
import (
	edgeconnectv1alpha1 "github.com/Dynatrace/dynatrace-operator/pkg/api/v1alpha1/edgeconnect"
	edgeconnectv1alpha2 "github.com/Dynatrace/dynatrace-operator/pkg/api/v1alpha2/edgeconnect"
)

done in 9a7bef9

[andriisoldatenko]

I would prefer to stick with current version:

https://github.com/dynatrace/dynatrace-operator/blob/7677e1ffa4b7161ff4b020d24f474ef24ddd9539/cmd/webhook/builder.go#L9-L10