feat: add platformFilters to BuildableFolderException

[fortmarek]

Summary

• Add platformFilters: [AbsolutePath: PlatformCondition] property to BuildableFolderException
• Enables per-file platform filtering for resources within buildable folders
• Default value is [:] so existing callers are unaffected

Dependencies

• Requires feat: add platformFiltersByRelativePath to exception sets XcodeProj#1065 (for platformFiltersByRelativePath on the exception set)

Test plan

• swift build passes
• No existing callers affected (default parameter value)

🤖 Generated with Claude Code

[dosubot]

Related Documentation

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