New feature: Android config module

**Background:**
for the upcoming organisational config based flavour of the Android app we need a new module within the panel that allows user to customize the Android app. customisations include shorter workflows by removing screens from the app, customised apps by adding logo and potentially images to the config.

The related ticket can be found here https://github.com/Greenstand/treetracker-stakeholder-api/issues/39

Start by reading the related stakeholder-api ticket at https://github.com/Greenstand/treetracker-stakeholder-api/issues/39 and reviewing the existing admin panel modules. Done should include a new Android configuration module supporting screen removal workflows and customization with a logo and potentially other images.

Written by the indexing model from the issue text.