* 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: #2502
Signed-off-by: Sébastien Han <seb@redhat.com>
