Enhance workspace and environment API schemas

[1012Charan]

Description

The current OpenAPI specifications for workspace and environment constructs under schemas/constructs/v1beta1 lack comprehensive documentation and have inconsistent error handling. While the basic CRUD endpoints exist, the schema definitions need enhancement to match production-quality standards.

Missing Functionality:

• Workspace: Missing detailed descriptions for relationship management endpoints (environments, designs), inconsistent error responses, and lacks professional API documentation structure.
• Environment: Missing comprehensive endpoint documentation, standardized error responses, and proper schema definitions for connection management operations.

Goal

Enhance the OpenAPI schemas to include professional-grade documentation, standardized error responses, consistent parameter usage, and detailed schema definitions that enable proper client code generation and API validation.

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