chore(IT Wallet): [SIW-1153] Add SPID identification flow

[mastro993]

Short description

This PR adds the SPID identification flow for the IT Wallet credential issuance.

[!note] The result of the identification will be used to request the eID in an separate PR. This PR adds a generic Alert as a placeholder.

List of changes proposed in this pull request

• Fixed an issue with keys in ItwMarkdown component
• Added useItwIdpIdentification hook which handles SPID identification flow
• Refactored ItwIdentificationIdpSelectionScreen to allow the SPID identification flow with the useItwIdpIdentification hook.

How to test

To test this PR with the io-dev-api-server, you need to make isFeatureFlagWithMinVersionEnabled("nativeLogin") function to return true. Then, navigate to Profile -> Playground -> IT Wallet -> eID -> SPID, select an IDP to start the identification.

Preview

https://github.com/pagopa/io-app/assets/6160324/6a84071e-8b14-45e7-913d-9dcf3ae4483a