* Embeddings example: set EmbeddingMode true

prevents an exception from being thrown when GetEmbeddings() is called

* Embeddings example: improve documentation and styling

* docs: improve GetEmbeddings page

If EmbeddingMode is not set to true, GetEmbeddings() throws an exception

* docs: improve GetEmbeddings page

The previous commit 6c9ff3158c was inaccurate

* Embeddings example: improve styling

displays the example description after the model is loaded to ensure the text is on the screen at the time the prompt is first requested

- Renamed files and updated namespaces in Examples folder.
- Moved files from NewVersion folder to Examples folder.
- Removed TestRunner.cs file.
- Updated Runner.cs to include new examples.
- Update Program.cs to use the new Runner class instead of NewVersionTestRunner
- Update LLama.Examples namespace in Program.cs
- Update await NewVersionTestRunner.Run() in Program.cs to await Runner.Run()