Implement required directory structure for Omnistrate specification examples

[Copilot]

This PR implements the proper directory structure for organizing Omnistrate specification and Docker Compose examples as requested in the repository requirements.

Changes Made

Directory Structure Created

The repository now has the following organized structure:

/spec
   /byoa
   /hosted
/compose
   /byoa
   /hosted

Documentation Added

• Individual README files: Each subdirectory now contains a README.md explaining its specific purpose and the types of examples it should contain
• Enhanced main README: Updated the root README.md with comprehensive documentation of the repository structure and deployment types

Key Features

• Clear separation between specification examples (/spec) and Docker Compose examples (/compose)
• Deployment type organization: Both main directories are organized by deployment types:
  • BYOA (Bring Your Own Account): For deployments in customer-owned cloud accounts
  • Hosted: For service provider-managed deployments
• Git tracking: All directories are properly tracked with meaningful documentation files
• Extensible structure: Ready for contributors to add examples in the appropriate directories

This structure provides a clear foundation for organizing Omnistrate examples and makes it easy for users to find the specific type of example they need based on their deployment model and configuration approach.

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