chore(IT Wallet): [SIW-1313] Add IT Wallet trial system status

[mastro993]

Short description

This PR allows the app to know if the user is enabled to use the IT Wallet experimental features

List of changes proposed in this pull request

• Added IT Wallet trial system status read at app boot
• Added IT Wallet trial system playgrounds

How to test

With the io-dev-api-server, go to Profile > Playgrounds > IT Wallet > Trial. You should be able to enable, refresh and reset the IT Wallet trial system.

Preview

https://github.com/pagopa/io-app/assets/6160324/1c638850-2fda-42b9-9c8b-6a53b137dce6