[Bug]: Expose `SharedFetcher` from `src/shared.rs`

[IgnisDa]

What happened?

Hi! Because the SharedFetcher is not exposed, I am having to do a lot of type gymnastics when moving from postgres to sqlite. Please take a look at this commit: IgnisDa/ryot@68e234f#diff-00dc0827d1aa51fd3c00a304fee1e7c4a6fed5dd9569c6abe867042c8e98ca8fR14-R21

Expected behavior

I expect the migration to sqlite to be simple and only change the imports from apalis-postgres to apalis-sqlite and the startup code.

Steps to reproduce

Please take a look at the commit above.

Minimal code example

Version

1.0.0-rc.x

Environment

• OS: Mac
• Rust version: 1.90.0
• Cargo version: cargo 1.90.0 (840b83a10 2025-07-30)

Relevant log output

Additional context

No response

[geofmureithi]

WIll fix this with in the rc.3 release