feat: consolidate most distros into "starter" (#2516)

# What does this PR do?

* Removes a bunch of distros
* Removed distros were added into the "starter" distribution
* Doc for "starter" has been added
* Partially reverts https://github.com/meta-llama/llama-stack/pull/2482
  since inference providers are disabled by default and can be turned on
  manually via env variable.
* Disables safety in starter distro

Closes: https://github.com/meta-llama/llama-stack/issues/2502.

~Needs: https://github.com/meta-llama/llama-stack/pull/2482 for Ollama
to work properly in the CI.~

TODO:

- [ ] We can only update `install.sh` when we get a new release.
- [x] Update providers documentation
- [ ] Update notebooks to reference starter instead of ollama

Signed-off-by: Sébastien Han <seb@redhat.com>

llama_stack/providers/remote/inference/tgi/tgi.py

@@ -327,7 +327,6 @@ class InferenceEndpointAdapter(_HfAdapter):
         # Get the inference endpoint details
         api = HfApi(token=config.api_token.get_secret_value())
         endpoint = api.get_inference_endpoint(config.endpoint_name)
-
         # Wait for the endpoint to be ready (if not already)
         endpoint.wait(timeout=60)