feat(cli): support finding Xcode via DEVELOPER_DIR

[plu]

[tuist[bot]]

🛠️ Tuist Run Report 🛠️

Tests 🧪

Command	Status	Cache hit rate	Tests	Skipped	Ran	Commit
test TuistAutomationAcceptanceTests	✅	85 %	1	0	1	603187997
test TuistKitAcceptanceTests	✅	85 %	1	0	1	603187997
test TuistUnitTests	❌	85 %	21	0	21	603187997

Builds 🔨

Scheme	Status	Duration	Commit
ProjectDescription	✅	1.4s	603187997
TuistAutomationAcceptanceTests	✅	1m 58s	603187997
TuistDependenciesAcceptanceTests	✅	2m 4s	603187997
TuistGeneratorAcceptanceTests	✅	1m 58s	603187997
TuistKitAcceptanceTests	✅	1m 40s	603187997
TuistUnitTests	✅	1m 1s	603187997

[pepicrft]

@plu what's the state of this one?

[plu]

I have not finished my investigation, sorry it's taking so long :(. XcodeController seems to work just fine, xcode-select -p returns the value from DEVELOPER_DIR, if set. So there must be a bug somewhere else. I came into this area originally because an update of Xcode would not cause a full test run.