feat: add apps:builds:unshare command

[robingenz]

What

Adds apps:builds:unshare to revoke the public share link of a build from the CLI — the symmetric counterpart to apps:builds:share, following the existing apps:link/apps:unlink naming pattern.

• Resolves the build via --app-id and --build-id or --build-number (with interactive selection, like apps:builds:share).
• Looks up the active share and calls the existing revoke endpoint; errors with a clear message when the build is not shared.
• Asks for confirmation before revoking (skippable with --yes), matching the delete-command convention.

[Copilot]

Pull request overview

Adds a new CLI command, apps:builds:unshare, to revoke a public share link for an app build, complementing the existing apps:builds:share flow and extending the app-build service layer to support listing and deleting shares.

Changes:

• Introduces apps:builds:unshare command with non-interactive behavior matching existing command patterns.
• Extends AppBuildsService with findAllShares and deleteShare methods and corresponding DTOs.
• Adds Vitest coverage for the new command’s basic success and error paths, and wires the command into the CLI entrypoint.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/types/app-build.ts	Adds DTOs for listing and deleting app build shares.
src/services/app-builds.ts	Implements share listing and share deletion endpoints in the service layer.
src/index.ts	Registers the new apps:builds:unshare command.
src/commands/apps/builds/unshare.ts	Implements the unshare CLI command logic (resolve build, find share, revoke).
src/commands/apps/builds/unshare.test.ts	Adds initial tests for revoking a share and common error conditions.

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