Standardize build upload types and outputs

[rudrankriyam]

Summary

• add typed resource/asset enums with pointer optional fields for build upload/submission models
• extend build upload/submission outputs to table/markdown printers
• expand client/command tests for JSON structure, validation, and API error paths

Test plan

• go test ./...

[cursor]

PR Summary

Adds typed models and end-to-end support for preparing uploads and submitting versions.

• Types/Enums: Introduce ResourceType, Platform, AssetType, UTI, Checksum* and use typed Resource/relationships with pointer optional fields
• Client: Implement build upload APIs (CreateBuildUpload, GetBuildUpload, CreateBuildUploadFile, UpdateBuildUploadFile) and App Store submission APIs (CreateAppStoreVersionSubmission, GetAppStoreVersionSubmission, DeleteAppStoreVersionSubmission); adjust GetBuilds to use /v1/builds with filter[app] when sorting/limiting
• CLI: Add asc builds upload and asc submit; restructure asc builds to parent with list/info/expire/upload; validate flags and print BuildUploadResult/AppStoreVersionSubmissionResult
• Output: Add table/markdown printers for upload/submission results
• Tests: Expand client/HTTP/output/command tests for JSON structure, validation errors, and API error paths
• Docs: Add Go standards and tips in Agents.md; minor config permission constants updated

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

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Duplicate subcommands in BuildsListCommand after refactoring

Medium Severity

BuildsListCommand incorrectly defines Subcommands containing BuildsInfoCommand() and BuildsExpireCommand(), even though these are already registered as sibling subcommands under the parent BuildsCommand. This refactoring error causes duplicate command definitions and creates an unintended command path (asc builds list info) that shouldn't exist. The list command is a leaf command for listing builds and should have no subcommands.

Additional Locations (1)

• cmd/commands.go#L516-L522