Refactor create, reconcile and resume cmds

* Take ObservedGeneration into account in readiness checks where
  applicable
* Reduce amount of code (and duplicate GETs) by working with pointers
  where possible
* Improve logged messages to properly take resource names into account
  and better describe processes

docs/cmd/gotk_create_helmrelease.md

@@ -66,7 +66,7 @@ gotk create helmrelease [name] [flags]
       --chart-version string      Helm chart version, accepts a semver range (ignored for charts from GitRepository sources)
       --depends-on stringArray    HelmReleases that must be ready before this release can be installed, supported formats '<name>' and '<namespace>/<name>'
   -h, --help                      help for helmrelease
-      --release-name string       name used for the Helm release, defaults to a composition of '[<target-namespace>-]<hr-name>'
+      --release-name string       name used for the Helm release, defaults to a composition of '[<target-namespace>-]<HelmRelease-name>'
       --source string             source that contains the chart (<kind>/<name>)
       --target-namespace string   namespace to install this release, defaults to the HelmRelease namespace
       --values string             local path to the values.yaml file

docs/cmd/gotk_reconcile_kustomization.md

@@ -26,7 +26,7 @@ gotk reconcile kustomization [name] [flags]
 
 ```
   -h, --help          help for kustomization
-      --with-source   reconcile kustomization source
+      --with-source   reconcile Kustomization source
 ```
 
 ### Options inherited from parent commands