add private link connection command

[shiyuhang0]

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license-eye has checked 773 files.

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• internal/cli/serverless/privatelink/ui.go

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[Copilot]

Pull request overview

This PR adds support for managing private link connections in TiDB Cloud Serverless clusters. It introduces a new set of CLI commands and integrates with the TiDB Cloud API to create, list, describe, and delete private link connections for both AWS and Alicloud endpoint services.

• Generated OpenAPI client code for the private link connection API
• Added CLI commands (create, delete, describe, list, zones) under serverless private-link-connection
• Integrated private link connection API client with the existing cloud service infrastructure
• Added interactive and non-interactive modes for all commands with proper validation

Reviewed changes

Copilot reviewed 44 out of 44 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pkg/tidbcloud/v1beta1/serverless/privatelink/*	Auto-generated OpenAPI client code for private link connection API
internal/service/cloud/api_client.go	Added API client delegate methods for private link connection operations
internal/service/cloud/logic.go	Added business logic for selecting and retrieving private link connections
internal/cli/serverless/privatelink/*.go	CLI command implementations for create, delete, describe, list, and zones operations
internal/flag/flag.go	Added new flag constants for private link connection parameters
internal/cli/serverless/cluster.go	Integrated private link connection command into serverless CLI
internal/mock/api_client.go	Updated mock client with private link connection methods
docs/generate_doc/*.md	Auto-generated documentation for new CLI commands
Makefile	Added generation target for private link client

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