Add Python and TypeScript samples for Azure Cosmos DB vector indexing

[diberry]

• Implemented Python sample for creating and querying vector indexes in Azure Cosmos DB.
• Added configuration management and environment variable loading in Python.
• Developed data-plane operations for document ingestion and querying with Azure OpenAI embeddings in Python.
• Created TypeScript sample for creating vector indexes and querying them using Azure Cosmos DB SDK.
• Included setup scripts and environment configuration for both Python and TypeScript samples.
• Added unit tests for configuration validation in Python.
• Updated documentation for both Python and TypeScript samples, including quickstart guides and output examples.

Purpose

• ...

Does this introduce a breaking change?

[ ] Yes
[ ] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information