[TypeSpec] Create MaterializedViews TypeSpec project for SDK generation

[Copilot]

This PR creates a new TypeSpec project for the Materialized Views service to enable SDK generation across multiple languages.

Changes Made

New TypeSpec Project Structure

• Location: specification/materializedviews/MaterializedViews.Management/
• API Version: 2025-04-01
• Service Type: ARM Management Plane

Files Added

1. main.tsp - Complete TypeSpec specification defining:

   • MaterializedViewResource with ARM resource modeling
   • CRUD operations (Create, Read, Update, Delete, List)
   • Custom refresh action for materialized view operations
   • Proper data models for view definitions, refresh policies, and data sources

2. tspconfig.yaml - Configuration for multi-language SDK generation:

   • .NET: Azure.ResourceManager.MaterializedViews
   • Python: azure-mgmt-materializedviews
   • Java: azure-resourcemanager-materializedviews
   • JavaScript: @azure/arm-materializedviews
   • Go: armmaterializedviews

3. Example files - Complete API examples for testing and validation

Generated Artifacts

• OpenAPI specification: specification/materializedviews/resource-manager/Microsoft.MaterializedViews/stable/2025-04-01/materializedviews.json
• Example JSON files for API operations

Validation Results

• ✅ TypeSpec compilation successful
• ✅ All TypeSpec validation rules passed
• ✅ Code formatting and linting applied
• ✅ ARM resource manager compliance verified

This TypeSpec project enables SDK generation for Python, .NET, Go, Java, and JavaScript as requested in the issue. The project follows Azure TypeSpec conventions and ARM resource modeling best practices.

Fixes #36843.

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[praveenkuttappan]

Is SDK generated? If yes, can you find the SDK pull request details?