PM-23661: CXF - Export Identity (#413)

## 🎟️ Tracking
https://bitwarden.atlassian.net/browse/PM-23661

<!-- Paste the link to the Jira or GitHub issue or otherwise describe /
point to where this change is coming from. -->

## 📔 Objective

This PR maps BW Identity to one or multiple CXF Credentials

<!-- Describe what the purpose of this PR is, for example what bug
you're fixing or new feature you're adding. -->

## ⏰ Reminders before review

- Contributor guidelines followed
- All formatters and local linters executed and passed
- Written new unit and / or integration tests where applicable
- Protected functional changes with optionality (feature flags)
- Used internationalization (i18n) for all UI strings
- CI builds passed
- Communicated to DevOps any deployment requirements
- Updated any necessary documentation (Confluence, contributing docs) or
informed the documentation
  team

## 🦮 Reviewer guidelines

<!-- Suggested interactions but feel free to use (or not) as you desire!
-->

- 👍 (`:+1:`) or similar for great changes
- 📝 (`:memo:`) or ℹ️ (`:information_source:`) for notes or general info
- ❓ (`:question:`) for questions
- 🤔 (`:thinking:`) or 💭 (`:thought_balloon:`) for more open inquiry
that's not quite a confirmed
  issue and could potentially benefit from discussion
- 🎨 (`:art:`) for suggestions / improvements
- ❌ (`:x:`) or ⚠️ (`:warning:`) for more significant problems or
concerns needing attention
- 🌱 (`:seedling:`) or ♻️ (`:recycle:`) for future improvements or
indications of technical debt
- ⛏ (`:pick:`) for minor or nitpick changes

---------

Co-authored-by: Oscar Hinton <[email protected]>

Author: abergs

crates/bitwarden-exporters/src/cxf/export.rs

@@ -79,8 +79,7 @@ impl From<CipherType> for Vec<Credential> {
         match value {
             CipherType::Login(login) => (*login).into(),
             CipherType::Card(card) => (*card).into(),
-            // TODO(PM-15451): Add support for identities.
-            CipherType::Identity(_) => vec![],
+            CipherType::Identity(identity) => (*identity).into(),
             // Secure Notes only contains a note field which is handled by `TryFrom<Cipher> for
             // Item`.
             CipherType::SecureNote(_) => vec![],