Update Compute backend configuration

[Kyle-Ye]

Summary

• Update Compute backend configuration to support source and binary modes with explicit repo/version/branch settings.
• Allow Tuist manifests to receive OPENSWIFTUI_* and OPENATTRIBUTEGRAPH_* environment values so generated projects can resolve the intended backend settings.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 32.17%. Comparing base (2f3beaf) to head (4cf6c33).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #228   +/-   ##
=======================================
  Coverage   32.17%   32.17%           
=======================================
  Files          71       71           
  Lines        2601     2601           
=======================================
  Hits          837      837           
  Misses       1764     1764           

Flag	Coverage Δ
ios	32.19% <ø> (ø)
macos	10.15% <ø> (ø)
ubuntu	12.03% <ø> (ø)

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[augmentcode]

🤖 Augment PR Summary

Summary: This PR makes the Compute-backed OpenAttributeGraphShims setup configurable via environment variables and ensures Tuist forwards relevant environment values into manifest evaluation.

Changes:

• Refactors the Compute dependency setup to support binary vs source modes with configurable repo/version/branch inputs.
• Updates Tuist project generation to pass through OPENSWIFTUI_* and OPENATTRIBUTEGRAPH_* environment variables to manifests.
• Refreshes Package.resolved to a newer DarwinPrivateFrameworks revision to match the updated configuration flow.

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[augmentcode]

Review completed. 2 suggestions posted.

Comment augment review to trigger a new review at any time.

[Kyle-Ye]

cc @jcmosc