Expose exporters for mobile

[Hinton]

Type of change

- [x] Bug fix
- [ ] New feature development
- [ ] Tech debt (refactoring, code cleanup, dependency upgrades, etc)
- [ ] Build/deploy pipeline (DevOps)
- [ ] Other

Objective

We forgot to expose the ClientsExporters in the uniffi bindings.

Before you submit

• Please add unit tests where it makes sense to do so

[bitwarden-bot]

Checkmarx One – Scan Summary & Details – 7fde3d3f-b3cd-475c-9ce5-3d9553302839

No New Or Fixed Issues Found

[codecov]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (16f4cc5) 59.41% compared to head (23a9c62) 59.40%.

Files	Patch %	Lines
crates/bitwarden-uniffi/src/lib.rs	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #612      +/-   ##
==========================================
- Coverage   59.41%   59.40%   -0.02%     
==========================================
  Files         171      171              
  Lines       10342    10345       +3     
==========================================
  Hits         6145     6145              
- Misses       4197     4200       +3     

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