BETA: Android: Nested present config attributes not working

[dimitrijuchtmans]

Describe the bug
I pass a dd-MM-yyy format to my DatePickerPlugin present function as part of the android configuration. my capacitor config has no default set, so by default plugin takes iso standard.
The more specific format is not overriding the default one.
This causes the app to crash with a parsing error on the dates.

To Reproduce
Steps to reproduce the behavior:

1. call DatePickerPlugin.present with a custom format, described in android: { format: 'dd-MM-yyyy'} for example
2. Open debug mode in android studio or whatever :).
3. Plugin calls the method PluginCall.getString(key, default) internally, but this capacitor method does not support nested keys.

Expected behavior
DatepickerPlugin.java should run custom code when dealing with nested json paths.

Screenshots
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Additional context
A temporary workaround is proably to have my dd-MM-yyy format described in the deprecated top level format config attribute ( or capacitor.config.json)