Manage apps with hooks

i like to add a easy mechanis to setup and configure appplication.

so i see the following new options in values.yaml:

nextcloud:
  appManagement:
    # -- if app not listed under apps it will be disabled
    autoDisable: true
    # -- if app not listed under apps it will be uninstalled
    autoRemove: true
    apps:
       deck:
         enabled: true
       drawio:
          enabled: true
          config:
            DrawioUrl: "https://embed.diagrams.net"
            DrawioOffline: "yes"

Therefore

• i will use the occ command with an initContainer for enable and check there installation
• nextcloud.appManagement.apps is an dict for easy use multiple value.yaml files and merge them
• config of applications are stored in an kubernetes-secret because they could containe sensitiv informations

Does you like to merge such code? Do you like to change something in the outside behaviour ?

ping @jessebot and #272

Start with the proposed values.yaml structure and the related discussion in issue #272; then inspect how the chart currently uses occ commands and initContainers. The issue's proposed behavior includes enabling, disabling, uninstalling, and configuring apps through Kubernetes Secrets, so done would require an agreed design and corresponding chart behavior.