feat: Add Bicep modules for Cognitive Services, Key Vault export, AI Projects, and Web Apps

- Created `dependencies.bicep` to manage Cognitive Services account configurations including deployments, private endpoints, and role assignments.
- Introduced `keyVaultExport.bicep` for exporting secrets to Azure Key Vault.
- Added `project.bicep` for creating AI Foundry projects linked to Cognitive Services.
- Developed `web-sites.bicep` for deploying various types of web applications with extensive configuration options.
- Implemented `web-sites.config.bicep` to manage app settings and configurations for deployed web apps.

Author: Abdul-Microsoft