Cardano Updates

Replaces IsCardanoEra constraint with Exp.IsEra in ToJSON instances
for TxOut and UTxO types, adopting the new experimental Era framework
for JSON serialization. This change simplifies the era handling by
using Exp.useEra instead of cardanoEra and reduces the pattern matching
cases in txOutToJsonValue to only handle ConwayEra and DijkstraEra.

- Update TxOut ToJSON instance to use Exp.IsEra constraint
- Update UTxO ToJSON instance to use Exp.IsEra constraint
- Refactor txOutToJsonValue to use Exp.Era type parameter
- Remove redundant pattern matches for Byron through Babbage eras
- Update test generators to use ShelleyBasedEraConway instead of Babbage

The test suite changes ensure compatibility with the new era handling
approach by testing against the Conway era, which provides better
coverage of the current serialization logic.

- Fix TransactionNotFoundModal footer placement and add localization
- Make transaction hash copiable with truncation in TransactionNotFoundModal
- Fix block link test to use only hash parameter (CIP-107)
- Refactor AddressDetails to AddressDetailsScreen with embedded view
- Extract AddressContent and AddressFooter from AddressModal for reuse
- Add onPress prop to Copiable component for address modal interaction
- Add onPress handlers in OverviewTab to open AddressModal for addresses

Added a questions section with multiple choice questions about Aiken commands and concepts.

Added a comprehensive guide for getting started with Aiken, including installation instructions, project creation, common commands, project structure, and configuration details.

Co-authored-by: Alexey Kuleshevich <[email protected]>

Signed-off-by: Evgeniy Dikevich <[email protected]>

Signed-off-by: Evgeniy Dikevich <[email protected]>

Signed-off-by: Evgeniy Dikevich <[email protected]>

Remove Discord social link from the Settings About page and update
related E2E tests to reflect this change.