Ships a focus megazord and updates to 93.2.0

[tarikeshaq]

The rust-components-swift part of mozilla/application-services#4821

Needs mozilla/application-services#4953 to land first, that PR also has the high-level reasoning for this.

What's changed in this PR

• We add a new library to ship, FocusAppServices that depends on a separate binary FocusRustComponents that has only the components the focus needs
• Modifies the scripts to generate the appropriate swift code for focus, and place that in swift-source/focus
• Moves the directory for the full binary into swift-source/all
• Modifies the script that updates A-S to also update a focus version and checksum
• Temporarily uses a circleci artifact, this will change to the release artifact before this lands

This will stay as a draft until mozilla/application-services#4953 lands and a release is cut.

[tarikeshaq]

The changes in swift-source are all autogenerated, only real changes are in the generate.sh script, the Package.swift, the creation of the FocusRustComponentsWrapper and the automation/update_package_swift.py

[tarikeshaq]

mozilla/application-services#4953 was landed and v93.2.0 was cut that has the artifact for focus

This should be ready for review, I tested this branch against focus to make sure it builds ok

I also ran the update_package_swift script with 93.2.0 to make sure the changes work properly

Edit: Also verified locally that firefox-ios builds ok, just out of caution

[skhamis]

This seems good to me. One thing i'm wondering is if this will potentially break some local published flows since there could now be potentially mismatches in the uniffi generated code.

Though most likely both components would never be used at the same time so that may not be an issue. I guess it depends on how XCode pulls in the entire Package.swift

All in all -- this looks good. Thanks on working on this!

[tarikeshaq]

Though most likely both components would never be used at the same time so that may not be an issue. I guess it depends on how XCode pulls in the entire Package.swift

Yeah I just double-checked 😬, in the package file in the apps it specifies which library it's using (firefox-ios has a section referencing MozillaAppServices, and focus-ios would reference FocusAppServices so as long as those don't change, the local flow shouldn't break, double checked by running the local script in firefox-ios