feat(scale): implement scale methods for apps

[Ryank90]

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[Copilot]

Pull request overview

Adds support for scaling serverless “apps” by introducing an apps scale command that PATCHes live worker configuration via a new Serverless API client method, and enhances single-deployment display output to include scaling-related configuration.

Changes:

• Implement runware serverless apps scale <appId> with flags mapped to a partial worker-config patch body.
• Add Client.UpdateDeployment(...) and exported type aliases needed for update/patch payloads.
• Expand single-deployment table display to include worker configuration fields; add/update tests and generated docs.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
internal/cmd/serverless/display.go	Switch single-deployment table output to Field/Value and include worker configuration/scaling fields.
internal/cmd/serverless/display_test.go	Add coverage for deploymentResult output including configuration fields; minor test constant reuse.
internal/cmd/serverless/deploy.go	Add optionalFlagStringPtr helper for “include empty string if flag explicitly set” semantics.
internal/cmd/serverless/apps.go	Wire apps scale into the apps command tree (replacing prior stub).
internal/cmd/serverless/apps_scale.go	New apps scale command implementation and flag→patch construction.
internal/cmd/serverless/apps_scale_test.go	New unit tests ensuring each scale flag produces exactly one JSON patch field and that at least one flag is required.
internal/api/serverless/client.go	Add exported aliases for update-related types and implement UpdateDeployment.
internal/api/serverless/client_test.go	Add tests for UpdateDeployment request shape, success path, 422 mapping, and missing API key.
docs/runware_serverless_apps_scale.md	Update generated command docs with synopsis, expanded examples, and options list.

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