[PM-7587] Support conditionally loading local sdk

[Hinton]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-7587

📔 Objective

For development purposes it can be beneficial to build against a local SDK build instead of the published artifacts. This uses the include function of XcodeGen to conditionally swap out the remote dependency for a local if LOCAL_SDK env flag is set.

⏰ 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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.74%. Comparing base (72cc8bd) to head (3473f2e).
Report is 20 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #960   +/-   ##
=======================================
  Coverage   88.74%   88.74%           
=======================================
  Files         638      638           
  Lines       39993    39993           
=======================================
  Hits        35491    35491           
  Misses       4502     4502           

☔ View full report in Codecov by Sentry.
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[github-actions]

Checkmarx One – Scan Summary & Details – d2f56315-4c4f-4bb3-a227-3c97dc700857

Fixed Issues

Severity	Issue	Source File / Package
	Unpinned Actions Full Length Commit SHA	/build.yml: 134

[fedemkr]

Looks good!