Save the white list filter to get it back when opening the application

[icarus31]

Is your feature request related to a problem? Please describe.
Maybe there is a reason behind the fact the list of white list filter is not saved, but would be possible to have the action to do it?

Describe the solution you'd like
Add the option to save the white and black list

Describe alternatives you've considered
N/A

Additional context
N/A

[philips77]

The Proxy Filter is blank whenever you connect to a proxy node. By default, upon connection, the library will automatically add all addresses of local elements and all group addresses that the local models are subscribed to*. The UI to customize the Proxy Filter is an extra feature demonstrating how to use the API, but the automatic subscription is sufficient for 99% of apps that will use the mesh library.

* - To subscribe a local model to an address you have to send ConfigModelSubscriptionAdd or ConfigModelSubsciptionVirtualAddressAdd to local Node.