Flip the dependency between exporters and vault

[Hinton]

📔 Objective

In preparation for #798 we need to flip the relationship between vault and exporters. Due to exporters in the future getting a client_exporters which means they need to be able to access the vault models to properly model it.

⏰ 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 – 15e5a497-ed64-41a0-bc48-353c05bf787b

No New Or Fixed Issues Found

[codecov]

Codecov Report

Attention: Patch coverage is 28.57143% with 10 lines in your changes missing coverage. Please review.

Project coverage is 59.24%. Comparing base (dfd0ba8) to head (8f6ebf6).

Files	Patch %	Lines
crates/bitwarden-exporters/src/models.rs	28.57%	10 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #833   +/-   ##
=======================================
  Coverage   59.23%   59.24%           
=======================================
  Files         186      186           
  Lines       12428    12426    -2     
=======================================
  Hits         7362     7362           
+ Misses       5066     5064    -2     

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