Implement device-bound passkey/device auth key

[iinuwa]

⚠️ This is a draft PR for discussing a proof-of-concept. Detailed review should not be done until this work is refined.

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-27582
https://bitwarden.atlassian.net/browse/PM-26177

📔 Objective

This PR adds the ability to create and use what we're calling a "device auth key" to sign-in using the Bitwarden app. This is a draft PR for a

• Adds opt-in feature to creating device auth key.
• Use of device auth key does not require vault unlock (as opposed to [PM-26177] Implement device-bound PRF passkey without SDK #2009)

This depends on:

• Add PRF passkey authenticator support and external passkeys sdk-internal#539
• [PM-26177] Allow mobile clients to create passkeys server#6383

📸 Screenshots

⏰ 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

• 👍 (:+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

[github-actions]

Checkmarx One – Scan Summary & Details – 46c86e20-5b87-4828-a268-678e3ae45e81

Great job! No new security vulnerabilities introduced in this pull request

[codecov]

Codecov Report

❌ Patch coverage is 0% with 17 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.55%. Comparing base (57f3f0e) to head (bc7bc04).

Files with missing lines	Patch %	Lines
BitwardenKit/Core/Platform/Extensions/Data.swift	0.00%	17 Missing ⚠️

Additional details and impacted files

@@                     Coverage Diff                      @@
##           iinuwa/update-passkey-rs    #2082      +/-   ##
============================================================
- Coverage                     43.58%   43.55%   -0.03%     
============================================================
  Files                           584      584              
  Lines                         30505    30522      +17     
============================================================
  Hits                          13295    13295              
- Misses                        17210    17227      +17     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.